Merge "Do not wrap the header title"
diff --git a/java/com/google/gerrit/server/project/ProjectCacheImpl.java b/java/com/google/gerrit/server/project/ProjectCacheImpl.java
index 6498d1b..0afaa3f 100644
--- a/java/com/google/gerrit/server/project/ProjectCacheImpl.java
+++ b/java/com/google/gerrit/server/project/ProjectCacheImpl.java
@@ -76,6 +76,7 @@
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantLock;
+import java.util.stream.Stream;
 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.errors.RepositoryNotFoundException;
 import org.eclipse.jgit.lib.Config;
@@ -300,19 +301,20 @@
   @Override
   public Set<AccountGroup.UUID> guessRelevantGroupUUIDs() {
     try (Timer0.Context ignored = guessRelevantGroupsLatency.start()) {
+      Stream<AccountGroup.UUID> configuredRelevantGroups =
+          Arrays.stream(config.getStringList("groups", /* subsection= */ null, "relevantGroup"))
+              .map(AccountGroup::uuid);
+
+      Stream<AccountGroup.UUID> guessedRelevantGroups =
+          inMemoryProjectCache.asMap().values().stream()
+              .filter(Objects::nonNull)
+              .flatMap(p -> p.getAllGroupUUIDs().stream())
+              // getAllGroupUUIDs shouldn't really return null UUIDs, but harden
+              // against them just in case there is a bug or corner case.
+              .filter(id -> id != null && id.get() != null);
+
       Set<AccountGroup.UUID> relevantGroupUuids =
-          Streams.concat(
-                  Arrays.stream(
-                          config.getStringList("groups", /* subsection= */ null, "relevantGroup"))
-                      .map(AccountGroup::uuid),
-                  all().stream()
-                      .map(n -> inMemoryProjectCache.getIfPresent(n))
-                      .filter(Objects::nonNull)
-                      .flatMap(p -> p.getAllGroupUUIDs().stream())
-                      // getAllGroupUUIDs shouldn't really return null UUIDs, but harden
-                      // against them just in case there is a bug or corner case.
-                      .filter(id -> id != null && id.get() != null))
-              .collect(toSet());
+          Streams.concat(configuredRelevantGroups, guessedRelevantGroups).collect(toSet());
       logger.atFine().log("relevant group UUIDs: %s", relevantGroupUuids);
       return relevantGroupUuids;
     }
diff --git a/java/com/google/gerrit/server/restapi/change/PostReview.java b/java/com/google/gerrit/server/restapi/change/PostReview.java
index a8ba052..22eb32c 100644
--- a/java/com/google/gerrit/server/restapi/change/PostReview.java
+++ b/java/com/google/gerrit/server/restapi/change/PostReview.java
@@ -379,7 +379,8 @@
       // Add the review ops.
       logger.atFine().log("posting review");
       PostReviewOp postReviewOp =
-          postReviewOpFactory.create(projectState, revision.getPatchSet().id(), input);
+          postReviewOpFactory.create(
+              projectState, revision.getPatchSet().id(), input, revision.getAccountId());
       bu.addOp(revision.getChange().getId(), postReviewOp);
 
       // Adjust the attention set based on the input
diff --git a/java/com/google/gerrit/server/restapi/change/PostReviewOp.java b/java/com/google/gerrit/server/restapi/change/PostReviewOp.java
index b7d17f2..29e453b 100644
--- a/java/com/google/gerrit/server/restapi/change/PostReviewOp.java
+++ b/java/com/google/gerrit/server/restapi/change/PostReviewOp.java
@@ -97,7 +97,8 @@
 
 public class PostReviewOp implements BatchUpdateOp {
   interface Factory {
-    PostReviewOp create(ProjectState projectState, PatchSet.Id psId, ReviewInput in);
+    PostReviewOp create(
+        ProjectState projectState, PatchSet.Id psId, ReviewInput in, Account.Id reviewerId);
   }
 
   /**
@@ -192,6 +193,7 @@
   private final ProjectState projectState;
   private final PatchSet.Id psId;
   private final ReviewInput in;
+  private final Account.Id reviewerId;
   private final boolean publishPatchSetLevelComment;
 
   private IdentifiedUser user;
@@ -220,7 +222,8 @@
       PluginSetContext<OnPostReview> onPostReviews,
       @Assisted ProjectState projectState,
       @Assisted PatchSet.Id psId,
-      @Assisted ReviewInput in) {
+      @Assisted ReviewInput in,
+      @Assisted Account.Id reviewerId) {
     this.approvalCopier = approvalCopier;
     this.approvalsUtil = approvalsUtil;
     this.publishCommentUtil = publishCommentUtil;
@@ -237,6 +240,7 @@
     this.projectState = projectState;
     this.psId = psId;
     this.in = in;
+    this.reviewerId = reviewerId;
   }
 
   @Override
@@ -645,10 +649,11 @@
           del.add(c);
           update.putApproval(normName, (short) 0);
         }
-        // Only allow voting again if the vote is copied over from a past patch-set, or the
-        // values are different.
+        // Only allow voting again the values are different, if the real account differs or if the
+        // vote is copied over from a past patch-set.
       } else if (c != null
           && (c.value() != ent.getValue()
+              || !c.realAccountId().equals(reviewerId)
               || (inLabels.containsKey(c.label()) && isApprovalCopiedOver(c, ctx.getNotes())))) {
         PatchSetApproval.Builder b =
             c.toBuilder()
diff --git a/javatests/com/google/gerrit/acceptance/rest/account/ImpersonationIT.java b/javatests/com/google/gerrit/acceptance/rest/account/ImpersonationIT.java
index 804723b..3531d1c 100644
--- a/javatests/com/google/gerrit/acceptance/rest/account/ImpersonationIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/account/ImpersonationIT.java
@@ -166,6 +166,202 @@
   }
 
   @Test
+  public void overrideImpersonatedVoteWithOtherImpersonatedVote_sameValue() throws Exception {
+    allowCodeReviewOnBehalfOf();
+    TestAccount realUser = admin;
+    TestAccount realUser2 = admin2;
+    TestAccount impersonatedUser = user;
+    PushOneCommit.Result r = createChange();
+    RevisionApi revision = gApi.changes().id(r.getChangeId()).current();
+
+    // realUser votes Code-Review+1 on behalf of impersonatedUser
+    ReviewInput in = ReviewInput.recommend();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Message on behalf of";
+    revision.review(in);
+
+    PatchSetApproval psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser.id());
+
+    ChangeData cd = r.getChange();
+    ChangeMessage m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser.id());
+
+    // realUser2 votes Code-Review+1 on behalf of impersonatedUser, this should override the
+    // impersonated Code-Review+1 of realUser with an impersonated Code-Review+1 of realUser2
+    requestScopeOperations.setApiUser(realUser2.id());
+    in = ReviewInput.recommend();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Another message on behalf of";
+    gApi.changes().id(r.getChangeId()).current().review(in);
+
+    psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser2.id());
+
+    cd = r.getChange();
+    m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser2.id());
+  }
+
+  @Test
+  public void overrideImpersonatedVoteWithOtherImpersonatedVote_differentValue() throws Exception {
+    allowCodeReviewOnBehalfOf();
+    TestAccount realUser = admin;
+    TestAccount realUser2 = admin2;
+    TestAccount impersonatedUser = user;
+    PushOneCommit.Result r = createChange();
+    RevisionApi revision = gApi.changes().id(r.getChangeId()).current();
+
+    // realUser votes Code-Review+1 on behalf of impersonatedUser
+    ReviewInput in = ReviewInput.recommend();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Message on behalf of";
+    revision.review(in);
+
+    PatchSetApproval psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser.id());
+
+    ChangeData cd = r.getChange();
+    ChangeMessage m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser.id());
+
+    // realUser2 votes Code-Review-1 on behalf of impersonatedUser, this should override the
+    // impersonated Code-Review+1 of realUser with an impersonated Code-Review-1 of realUser2
+    requestScopeOperations.setApiUser(realUser2.id());
+    in = ReviewInput.dislike();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Another message on behalf of";
+    gApi.changes().id(r.getChangeId()).current().review(in);
+
+    psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(-1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser2.id());
+
+    cd = r.getChange();
+    m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser2.id());
+  }
+
+  @Test
+  public void overrideImpersonatedVoteWithNonImpersonatedVote_sameValue() throws Exception {
+    allowCodeReviewOnBehalfOf();
+    TestAccount realUser = admin;
+    TestAccount impersonatedUser = user;
+    PushOneCommit.Result r = createChange();
+    RevisionApi revision = gApi.changes().id(r.getChangeId()).current();
+
+    // realUser votes Code-Review+1 on behalf of impersonatedUser
+    ReviewInput in = ReviewInput.recommend();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Message on behalf of";
+    revision.review(in);
+
+    PatchSetApproval psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser.id());
+
+    ChangeData cd = r.getChange();
+    ChangeMessage m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser.id());
+
+    // impersonatedUser votes Code-Review+1 themselves, this should override the impersonated
+    // Code-Review+1 with a non-impersonated Code-Review+1
+    requestScopeOperations.setApiUser(impersonatedUser.id());
+    in = ReviewInput.recommend();
+    in.message = "Message";
+    gApi.changes().id(r.getChangeId()).current().review(in);
+
+    psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(impersonatedUser.id());
+
+    cd = r.getChange();
+    m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(impersonatedUser.id());
+  }
+
+  @Test
+  public void overrideImpersonatedVoteWithNonImpersonatedVote_differentValue() throws Exception {
+    allowCodeReviewOnBehalfOf();
+    TestAccount realUser = admin;
+    TestAccount impersonatedUser = user;
+    PushOneCommit.Result r = createChange();
+    RevisionApi revision = gApi.changes().id(r.getChangeId()).current();
+
+    // realUser votes Code-Review+1 on behalf of impersonatedUser
+    ReviewInput in = ReviewInput.recommend();
+    in.onBehalfOf = impersonatedUser.id().toString();
+    in.message = "Message on behalf of";
+    revision.review(in);
+
+    PatchSetApproval psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(1);
+    assertThat(psa.realAccountId()).isEqualTo(realUser.id());
+
+    ChangeData cd = r.getChange();
+    ChangeMessage m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(realUser.id());
+
+    // impersonatedUser votes Code-Review-1 themselves, this should override the impersonated
+    // Code-Review+1 with a non-impersonated Code-Review-1
+    requestScopeOperations.setApiUser(impersonatedUser.id());
+    in = ReviewInput.dislike();
+    in.message = "Message";
+    gApi.changes().id(r.getChangeId()).current().review(in);
+
+    psa = Iterables.getOnlyElement(r.getChange().approvals().values());
+    assertThat(psa.patchSetId().get()).isEqualTo(1);
+    assertThat(psa.label()).isEqualTo("Code-Review");
+    assertThat(psa.accountId()).isEqualTo(impersonatedUser.id());
+    assertThat(psa.value()).isEqualTo(-1);
+    assertThat(psa.realAccountId()).isEqualTo(impersonatedUser.id());
+
+    cd = r.getChange();
+    m = Iterables.getLast(cmUtil.byChange(cd.notes()));
+    assertThat(m.getMessage()).endsWith(in.message);
+    assertThat(m.getAuthor()).isEqualTo(impersonatedUser.id());
+    assertThat(m.getRealAuthor()).isEqualTo(impersonatedUser.id());
+  }
+
+  @Test
   public void voteOnBehalfOfRequiresLabel() throws Exception {
     allowCodeReviewOnBehalfOf();
     PushOneCommit.Result r = createChange();
diff --git a/polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-file-edit-dialog.ts b/polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-file-edit-dialog.ts
index 0b1bd80..0cfbaa4 100644
--- a/polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-file-edit-dialog.ts
+++ b/polygerrit-ui/app/elements/admin/gr-create-change-dialog/gr-create-file-edit-dialog.ts
@@ -14,7 +14,7 @@
 import {LitElement, html, nothing} from 'lit';
 import {customElement, property, query, state} from 'lit/decorators.js';
 import {resolve} from '../../../models/dependency';
-import {createEditUrl} from '../../../models/views/edit';
+import {createEditUrl} from '../../../models/views/change';
 import {modalStyles} from '../../../styles/gr-modal-styles';
 import {assertIsDefined} from '../../../utils/common-util';
 import {when} from 'lit/directives/when.js';
diff --git a/polygerrit-ui/app/elements/admin/gr-repo-commands/gr-repo-commands.ts b/polygerrit-ui/app/elements/admin/gr-repo-commands/gr-repo-commands.ts
index 2624677..11cfaab 100644
--- a/polygerrit-ui/app/elements/admin/gr-repo-commands/gr-repo-commands.ts
+++ b/polygerrit-ui/app/elements/admin/gr-repo-commands/gr-repo-commands.ts
@@ -31,7 +31,7 @@
 import {LitElement, PropertyValues, css, html} from 'lit';
 import {customElement, query, property, state} from 'lit/decorators.js';
 import {assertIsDefined} from '../../../utils/common-util';
-import {createEditUrl} from '../../../models/views/edit';
+import {createEditUrl} from '../../../models/views/change';
 import {resolve} from '../../../models/dependency';
 import {modalStyles} from '../../../styles/gr-modal-styles';
 import {GrCreateFileEditDialog} from '../gr-create-change-dialog/gr-create-file-edit-dialog';
diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.ts b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.ts
index 75854cc..e47b450 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.ts
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.ts
@@ -1577,10 +1577,11 @@
       base: e.detail.base,
       allow_conflicts: e.detail.allowConflicts,
     };
+    const rebaseChain = !!e.detail.rebaseChain;
     this.fireAction(
-      '/rebase',
+      rebaseChain ? '/rebase:chain' : '/rebase',
       assertUIActionInfo(this.revisionActions.rebase),
-      true,
+      rebaseChain ? false : true,
       payload,
       {allow_conflicts: payload.allow_conflicts}
     );
diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.ts b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.ts
index c6bfd55..4602eac 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.ts
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.ts
@@ -625,7 +625,9 @@
       };
       assert.isTrue(fetchChangesStub.called);
       element.handleRebaseConfirm(
-        new CustomEvent('', {detail: {base: '1234', allowConflicts: false}})
+        new CustomEvent('', {
+          detail: {base: '1234', allowConflicts: false, rebaseChain: false},
+        })
       );
       assert.deepEqual(fireActionStub.lastCall.args, [
         '/rebase',
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.ts b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.ts
index c7473ca..a54a565 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.ts
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.ts
@@ -176,9 +176,9 @@
   changeViewModelToken,
   ChangeViewState,
   createChangeUrl,
+  createEditUrl,
 } from '../../../models/views/change';
 import {rootUrl} from '../../../utils/url-util';
-import {createEditUrl} from '../../../models/views/edit';
 import {userModelToken} from '../../../models/user/user-model';
 import {pluginLoaderToken} from '../../shared/gr-js-api-interface/gr-plugin-loader';
 import {modalStyles} from '../../../styles/gr-modal-styles';
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
index da61b60..b0dbda5 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
+++ b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
@@ -5,6 +5,7 @@
  */
 import {css, html, LitElement, PropertyValues} from 'lit';
 import {customElement, property, query, state} from 'lit/decorators.js';
+import {when} from 'lit/directives/when.js';
 import {
   NumericChangeId,
   BranchName,
@@ -21,6 +22,7 @@
 import {sharedStyles} from '../../../styles/shared-styles';
 import {ValueChangedEvent} from '../../../types/events';
 import {throwingErrorCallback} from '../../shared/gr-rest-api-interface/gr-rest-apis/gr-rest-api-helper';
+import {KnownExperimentId} from '../../../services/flags/flags';
 
 export interface RebaseChange {
   name: string;
@@ -30,6 +32,7 @@
 export interface ConfirmRebaseEventDetail {
   base: string | null;
   allowConflicts: boolean;
+  rebaseChain: boolean;
 }
 
 @customElement('gr-confirm-rebase-dialog')
@@ -85,11 +88,16 @@
   @query('#rebaseAllowConflicts')
   private rebaseAllowConflicts!: HTMLInputElement;
 
+  @query('#rebaseChain')
+  private rebaseChain?: HTMLInputElement;
+
   @query('#parentInput')
   parentInput!: GrAutocomplete;
 
   private readonly restApiService = getAppContext().restApiService;
 
+  private readonly flagsService = getAppContext().flagsService;
+
   constructor() {
     super();
     this.query = input => this.getChangeSuggestions(input);
@@ -221,6 +229,14 @@
               >Allow rebase with conflicts</label
             >
           </div>
+          ${when(
+            this.flagsService.isEnabled(KnownExperimentId.REBASE_CHAIN),
+            () =>
+              html`<div>
+                <input id="rebaseChain" type="checkbox" />
+                <label for="rebaseChain">Rebase all ancestors</label>
+              </div>`
+          )}
         </div>
       </gr-dialog>
     `;
@@ -326,6 +342,7 @@
     const detail: ConfirmRebaseEventDetail = {
       base: this.getSelectedBase(),
       allowConflicts: this.rebaseAllowConflicts.checked,
+      rebaseChain: !!this.rebaseChain?.checked,
     };
     this.dispatchEvent(new CustomEvent('confirm', {detail}));
     this.text = '';
diff --git a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.ts b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.ts
index 08aecb9..d4defcb 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.ts
+++ b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.ts
@@ -78,9 +78,11 @@
 import {incrementalRepeat} from '../../lit/incremental-repeat';
 import {ifDefined} from 'lit/directives/if-defined.js';
 import {HtmlPatched} from '../../../utils/lit-util';
-import {createDiffUrl} from '../../../models/views/diff';
-import {createEditUrl} from '../../../models/views/edit';
-import {createChangeUrl} from '../../../models/views/change';
+import {
+  createDiffUrl,
+  createEditUrl,
+  createChangeUrl,
+} from '../../../models/views/change';
 import {userModelToken} from '../../../models/user/user-model';
 import {pluginLoaderToken} from '../../shared/gr-js-api-interface/gr-plugin-loader';
 import {FileMode, fileModeToString} from '../../../utils/file-util';
diff --git a/polygerrit-ui/app/elements/checks/gr-checks-results.ts b/polygerrit-ui/app/elements/checks/gr-checks-results.ts
index 9d2e214..5792230 100644
--- a/polygerrit-ui/app/elements/checks/gr-checks-results.ts
+++ b/polygerrit-ui/app/elements/checks/gr-checks-results.ts
@@ -75,8 +75,7 @@
 import {HtmlPatched} from '../../utils/lit-util';
 import {DropdownItem} from '../shared/gr-dropdown-list/gr-dropdown-list';
 import './gr-checks-attempt';
-import {createDiffUrl} from '../../models/views/diff';
-import {changeViewModelToken} from '../../models/views/change';
+import {createDiffUrl, changeViewModelToken} from '../../models/views/change';
 
 /**
  * Firing this event sets the regular expression of the results filter.
diff --git a/polygerrit-ui/app/elements/core/gr-router/gr-router.ts b/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
index ac54d35..bcf6937 100644
--- a/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
+++ b/polygerrit-ui/app/elements/core/gr-router/gr-router.ts
@@ -70,6 +70,7 @@
   ChangeViewModel,
   ChangeViewState,
   createChangeViewUrl,
+  createDiffUrl,
 } from '../../../models/views/change';
 import {
   DashboardViewModel,
@@ -97,7 +98,6 @@
   getPatchRangeForCommentUrl,
   isInBaseOfPatchRange,
 } from '../../../utils/comment-util';
-import {createDiffUrl} from '../../../models/views/diff';
 import {isFileUnchanged} from '../../../embed/diff/gr-diff/gr-diff-utils';
 
 const RoutePattern = {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.ts b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.ts
index 65a5a23..a9cbcbd 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.ts
@@ -84,8 +84,8 @@
 import {sharedStyles} from '../../../styles/shared-styles';
 import {ifDefined} from 'lit/directives/if-defined.js';
 import {when} from 'lit/directives/when.js';
-import {createDiffUrl} from '../../../models/views/diff';
 import {
+  createDiffUrl,
   ChangeChildView,
   changeViewModelToken,
 } from '../../../models/views/change';
diff --git a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.ts b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.ts
index 84413c8..ec1e48e 100644
--- a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.ts
+++ b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.ts
@@ -29,7 +29,7 @@
 import {customElement, property, query, state} from 'lit/decorators.js';
 import {BindValueChangeEvent} from '../../../types/events';
 import {IronInputElement} from '@polymer/iron-input/iron-input';
-import {createEditUrl} from '../../../models/views/edit';
+import {createEditUrl} from '../../../models/views/change';
 import {resolve} from '../../../models/dependency';
 import {modalStyles} from '../../../styles/gr-modal-styles';
 import {whenVisible} from '../../../utils/dom-util';
diff --git a/polygerrit-ui/app/elements/shared/gr-comment-thread/gr-comment-thread.ts b/polygerrit-ui/app/elements/shared/gr-comment-thread/gr-comment-thread.ts
index 4467f58..dd0fbca 100644
--- a/polygerrit-ui/app/elements/shared/gr-comment-thread/gr-comment-thread.ts
+++ b/polygerrit-ui/app/elements/shared/gr-comment-thread/gr-comment-thread.ts
@@ -72,8 +72,7 @@
 import {whenRendered} from '../../../utils/dom-util';
 import {Interaction} from '../../../constants/reporting';
 import {HtmlPatched} from '../../../utils/lit-util';
-import {createDiffUrl} from '../../../models/views/diff';
-import {createChangeUrl} from '../../../models/views/change';
+import {createChangeUrl, createDiffUrl} from '../../../models/views/change';
 import {userModelToken} from '../../../models/user/user-model';
 import {highlightServiceToken} from '../../../services/highlight/highlight-service';
 
diff --git a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
index 090dfef..66beaf1 100644
--- a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
+++ b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment.ts
@@ -60,7 +60,7 @@
 import {Interaction} from '../../../constants/reporting';
 import {KnownExperimentId} from '../../../services/flags/flags';
 import {isBase64FileContent} from '../../../api/rest-api';
-import {createDiffUrl} from '../../../models/views/diff';
+import {createDiffUrl} from '../../../models/views/change';
 import {userModelToken} from '../../../models/user/user-model';
 import {modalStyles} from '../../../styles/gr-modal-styles';
 
@@ -547,8 +547,9 @@
           ${this.renderDraftLabel()}
         </div>
         <div class="headerMiddle">${this.renderCollapsedContent()}</div>
-        ${this.renderRunDetails()} ${this.renderDeleteButton()}
-        ${this.renderPatchset()} ${this.renderDate()} ${this.renderToggle()}
+        ${this.renderSuggestEditButton()} ${this.renderRunDetails()}
+        ${this.renderDeleteButton()} ${this.renderPatchset()}
+        ${this.renderDate()} ${this.renderToggle()}
       </div>
     `;
   }
@@ -777,10 +778,9 @@
     return html`
       <div class="rightActions">
         ${this.autoSaving ? html`.&nbsp;&nbsp;` : ''}
-        ${this.renderDiscardButton()} ${this.renderSuggestEditButton()}
-        ${this.renderPreviewSuggestEditButton()} ${this.renderEditButton()}
-        ${this.renderCancelButton()} ${this.renderSaveButton()}
-        ${this.renderCopyLinkIcon()}
+        ${this.renderDiscardButton()} ${this.renderPreviewSuggestEditButton()}
+        ${this.renderEditButton()} ${this.renderCancelButton()}
+        ${this.renderSaveButton()} ${this.renderCopyLinkIcon()}
       </div>
     `;
   }
@@ -809,6 +809,7 @@
       return nothing;
     }
     if (
+      !this.editing ||
       this.permanentEditingMode ||
       this.comment?.path === SpecialFilePath.PATCHSET_LEVEL_COMMENTS
     ) {
@@ -1139,7 +1140,8 @@
     fire(this, 'open-fix-preview', await this.createFixPreview());
   }
 
-  async createSuggestEdit() {
+  async createSuggestEdit(e: MouseEvent) {
+    e.stopPropagation();
     const line = await this.getCommentedCode();
     this.messageText += `${USER_SUGGESTION_START_PATTERN}${line}${'\n```'}`;
   }
diff --git a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment_test.ts b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment_test.ts
index ec9c875..3390369 100644
--- a/polygerrit-ui/app/elements/shared/gr-comment/gr-comment_test.ts
+++ b/polygerrit-ui/app/elements/shared/gr-comment/gr-comment_test.ts
@@ -854,12 +854,12 @@
           .initiallyCollapsed=${false}
         ></gr-comment>`
       );
+      element.editing = true;
     });
     test('renders suggest fix button', () => {
       assert.dom.equal(
         queryAndAssert(element, 'gr-button.suggestEdit'),
         /* HTML */ `<gr-button
-          aria-disabled="false"
           class="action suggestEdit"
           link=""
           role="button"
diff --git a/polygerrit-ui/app/models/change/change-model.ts b/polygerrit-ui/app/models/change/change-model.ts
index 2bde847..446822f 100644
--- a/polygerrit-ui/app/models/change/change-model.ts
+++ b/polygerrit-ui/app/models/change/change-model.ts
@@ -38,10 +38,13 @@
 import {UserModel} from '../user/user-model';
 import {define} from '../dependency';
 import {isOwner} from '../../utils/change-util';
-import {ChangeViewModel, createChangeUrl} from '../views/change';
-import {createDiffUrl} from '../views/diff';
+import {
+  ChangeViewModel,
+  createChangeUrl,
+  createDiffUrl,
+  createEditUrl,
+} from '../views/change';
 import {NavigationService} from '../../elements/core/gr-navigation/gr-navigation';
-import {createEditUrl} from '../views/edit';
 
 export enum LoadingStatus {
   NOT_LOADED = 'NOT_LOADED',
diff --git a/polygerrit-ui/app/models/views/change.ts b/polygerrit-ui/app/models/views/change.ts
index e3570d1..a206037 100644
--- a/polygerrit-ui/app/models/views/change.ts
+++ b/polygerrit-ui/app/models/views/change.ts
@@ -10,6 +10,7 @@
   BasePatchSetNum,
   ChangeInfo,
   PatchSetNumber,
+  EDIT,
 } from '../../api/rest-api';
 import {Tab} from '../../constants/constants';
 import {GerritView} from '../../services/router/router-model';
@@ -25,8 +26,6 @@
 import {define} from '../dependency';
 import {Model} from '../model';
 import {ViewState} from './base';
-import {createDiffUrl} from './diff';
-import {createEditUrl} from './edit';
 
 export enum ChangeChildView {
   OVERVIEW = 'OVERVIEW',
@@ -143,11 +142,8 @@
     ...obj,
     childView: ChangeChildView.OVERVIEW,
   });
-  let range = getPatchRangeExpression(state);
-  if (range.length) {
-    range = '/' + range;
-  }
-  let suffix = `${range}`;
+
+  let suffix = '';
   const queries = [];
   if (state.checksPatchset && state.checksPatchset > 0) {
     queries.push(`checksPatchset=${state.checksPatchset}`);
@@ -180,7 +176,7 @@
     suffix += ',edit';
   }
   if (state.commentId) {
-    suffix = suffix + `/comments/${state.commentId}`;
+    suffix += `/comments/${state.commentId}`;
   }
   if (queries.length > 0) {
     suffix += '?' + queries.join('&');
@@ -188,12 +184,67 @@
   if (state.messageHash) {
     suffix += state.messageHash;
   }
-  if (state.repo) {
-    const encodedProject = encodeURL(state.repo, true);
-    return `${getBaseUrl()}/c/${encodedProject}/+/${state.changeNum}${suffix}`;
-  } else {
-    return `${getBaseUrl()}/c/${state.changeNum}${suffix}`;
+
+  return `${createChangeUrlCommon(state)}${suffix}`;
+}
+
+export function createDiffUrl(
+  obj: CreateChangeUrlObject | Omit<ChangeViewState, 'view' | 'childView'>
+) {
+  const state: ChangeViewState = objToState({
+    ...obj,
+    childView: ChangeChildView.DIFF,
+  });
+
+  const path = `/${encodeURL(state.diffView?.path ?? '', true)}`;
+
+  let suffix = '';
+  // TODO: Move creating of comment URLs to a separate function. We are
+  // "abusing" the `commentId` property, which should only be used for pointing
+  // to comment in the COMMENTS tab of the OVERVIEW page.
+  if (state.commentId) {
+    suffix += `comment/${state.commentId}/`;
   }
+
+  if (state.diffView?.lineNum) {
+    suffix += '#';
+    if (state.diffView?.leftSide) {
+      suffix += 'b';
+    }
+    suffix += state.diffView.lineNum;
+  }
+
+  return `${createChangeUrlCommon(state)}${path}${suffix}`;
+}
+
+export function createEditUrl(
+  obj: Omit<ChangeViewState, 'view' | 'childView'>
+): string {
+  const state: ChangeViewState = objToState({
+    ...obj,
+    childView: ChangeChildView.DIFF,
+    patchNum: obj.patchNum ?? EDIT,
+  });
+
+  const path = `/${encodeURL(state.editView?.path ?? '', true)}`;
+  const line = state.editView?.lineNum;
+  const suffix = line ? `#${line}` : '';
+
+  return `${createChangeUrlCommon(state)}${path},edit${suffix}`;
+}
+
+/**
+ * The shared part of creating a change URL between OVERVIEW, DIFF and EDIT
+ * child views.
+ */
+function createChangeUrlCommon(state: ChangeViewState) {
+  let range = getPatchRangeExpression(state);
+  if (range.length) range = '/' + range;
+
+  let repo = '';
+  if (state.repo) repo = `${encodeURL(state.repo, true)}/+/`;
+
+  return `${getBaseUrl()}/c/${repo}${state.changeNum}${range}`;
 }
 
 export const changeViewModelToken =
diff --git a/polygerrit-ui/app/models/views/change_test.ts b/polygerrit-ui/app/models/views/change_test.ts
index ca6f104..837e362 100644
--- a/polygerrit-ui/app/models/views/change_test.ts
+++ b/polygerrit-ui/app/models/views/change_test.ts
@@ -10,8 +10,17 @@
   RevisionPatchSetNum,
 } from '../../api/rest-api';
 import '../../test/common-test-setup';
-import {createChangeViewState} from '../../test/test-data-generators';
-import {createChangeUrl, ChangeViewState} from './change';
+import {
+  createChangeViewState,
+  createDiffViewState,
+  createEditViewState,
+} from '../../test/test-data-generators';
+import {
+  createChangeUrl,
+  createDiffUrl,
+  createEditUrl,
+  ChangeViewState,
+} from './change';
 
 suite('change view state tests', () => {
   test('createChangeUrl()', () => {
@@ -67,4 +76,75 @@
     };
     assert.equal(createChangeUrl(state), '/c/x%252B/y%252B/z%252B/w/+/42');
   });
+
+  test('createDiffUrl', () => {
+    const params: ChangeViewState = {
+      ...createDiffViewState(),
+      patchNum: 12 as RevisionPatchSetNum,
+      diffView: {path: 'x+y/path.cpp'},
+    };
+    assert.equal(
+      createDiffUrl(params),
+      '/c/test-project/+/42/12/x%252By/path.cpp'
+    );
+
+    window.CANONICAL_PATH = '/base';
+    assert.equal(createDiffUrl(params).substring(0, 5), '/base');
+    window.CANONICAL_PATH = undefined;
+
+    params.repo = 'test' as RepoName;
+    assert.equal(createDiffUrl(params), '/c/test/+/42/12/x%252By/path.cpp');
+
+    params.basePatchNum = 6 as BasePatchSetNum;
+    assert.equal(createDiffUrl(params), '/c/test/+/42/6..12/x%252By/path.cpp');
+
+    params.diffView = {
+      path: 'foo bar/my+file.txt%',
+    };
+    params.patchNum = 2 as RevisionPatchSetNum;
+    delete params.basePatchNum;
+    assert.equal(
+      createDiffUrl(params),
+      '/c/test/+/42/2/foo+bar/my%252Bfile.txt%2525'
+    );
+
+    params.diffView = {
+      path: 'file.cpp',
+      lineNum: 123,
+    };
+    assert.equal(createDiffUrl(params), '/c/test/+/42/2/file.cpp#123');
+
+    params.diffView = {
+      path: 'file.cpp',
+      lineNum: 123,
+      leftSide: true,
+    };
+    assert.equal(createDiffUrl(params), '/c/test/+/42/2/file.cpp#b123');
+  });
+
+  test('diff with repo name encoding', () => {
+    const params: ChangeViewState = {
+      ...createDiffViewState(),
+      patchNum: 12 as RevisionPatchSetNum,
+      repo: 'x+/y' as RepoName,
+      diffView: {path: 'x+y/path.cpp'},
+    };
+    assert.equal(createDiffUrl(params), '/c/x%252B/y/+/42/12/x%252By/path.cpp');
+  });
+
+  test('createEditUrl', () => {
+    const params: ChangeViewState = {
+      ...createEditViewState(),
+      patchNum: 12 as RevisionPatchSetNum,
+      editView: {path: 'x+y/path.cpp' as RepoName, lineNum: 31},
+    };
+    assert.equal(
+      createEditUrl(params),
+      '/c/test-project/+/42/12/x%252By/path.cpp,edit#31'
+    );
+
+    window.CANONICAL_PATH = '/base';
+    assert.equal(createEditUrl(params).substring(0, 5), '/base');
+    window.CANONICAL_PATH = undefined;
+  });
 });
diff --git a/polygerrit-ui/app/models/views/diff.ts b/polygerrit-ui/app/models/views/diff.ts
deleted file mode 100644
index 961c9d5..0000000
--- a/polygerrit-ui/app/models/views/diff.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-/**
- * @license
- * Copyright 2022 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-import {
-  encodeURL,
-  getBaseUrl,
-  getPatchRangeExpression,
-} from '../../utils/url-util';
-import {
-  ChangeChildView,
-  ChangeViewState,
-  CreateChangeUrlObject,
-  objToState,
-} from './change';
-
-// TODO: Move to change.ts.
-export function createDiffUrl(
-  obj: CreateChangeUrlObject | Omit<ChangeViewState, 'view' | 'childView'>
-) {
-  const state: ChangeViewState = objToState({
-    ...obj,
-    childView: ChangeChildView.DIFF,
-  });
-  let range = getPatchRangeExpression(state);
-  if (range.length) range = '/' + range;
-
-  let suffix = `${range}/${encodeURL(state.diffView?.path ?? '', true)}`;
-
-  if (state.diffView?.lineNum) {
-    suffix += '#';
-    if (state.diffView?.leftSide) {
-      suffix += 'b';
-    }
-    suffix += state.diffView.lineNum;
-  }
-
-  // TODO: Move creating of comment URLs to a separate function. We are
-  // "abusing" the `commentId` property, which should only be used for pointing
-  // to comment in the COMMENTS tab of the OVERVIEW page.
-  if (state.commentId) {
-    suffix = `/comment/${state.commentId}` + suffix;
-  }
-
-  if (state.repo) {
-    const encodedProject = encodeURL(state.repo, true);
-    return `${getBaseUrl()}/c/${encodedProject}/+/${state.changeNum}${suffix}`;
-  } else {
-    return `${getBaseUrl()}/c/${state.changeNum}${suffix}`;
-  }
-}
diff --git a/polygerrit-ui/app/models/views/diff_test.ts b/polygerrit-ui/app/models/views/diff_test.ts
deleted file mode 100644
index 851bed7..0000000
--- a/polygerrit-ui/app/models/views/diff_test.ts
+++ /dev/null
@@ -1,72 +0,0 @@
-/**
- * @license
- * Copyright 2022 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-import {assert} from '@open-wc/testing';
-import {
-  BasePatchSetNum,
-  RepoName,
-  RevisionPatchSetNum,
-} from '../../api/rest-api';
-import '../../test/common-test-setup';
-import {createDiffViewState} from '../../test/test-data-generators';
-import {ChangeViewState} from './change';
-import {createDiffUrl} from './diff';
-
-suite('diff view state tests', () => {
-  test('createDiffUrl', () => {
-    const params: ChangeViewState = {
-      ...createDiffViewState(),
-      patchNum: 12 as RevisionPatchSetNum,
-      diffView: {path: 'x+y/path.cpp'},
-    };
-    assert.equal(
-      createDiffUrl(params),
-      '/c/test-project/+/42/12/x%252By/path.cpp'
-    );
-
-    window.CANONICAL_PATH = '/base';
-    assert.equal(createDiffUrl(params).substring(0, 5), '/base');
-    window.CANONICAL_PATH = undefined;
-
-    params.repo = 'test' as RepoName;
-    assert.equal(createDiffUrl(params), '/c/test/+/42/12/x%252By/path.cpp');
-
-    params.basePatchNum = 6 as BasePatchSetNum;
-    assert.equal(createDiffUrl(params), '/c/test/+/42/6..12/x%252By/path.cpp');
-
-    params.diffView = {
-      path: 'foo bar/my+file.txt%',
-    };
-    params.patchNum = 2 as RevisionPatchSetNum;
-    delete params.basePatchNum;
-    assert.equal(
-      createDiffUrl(params),
-      '/c/test/+/42/2/foo+bar/my%252Bfile.txt%2525'
-    );
-
-    params.diffView = {
-      path: 'file.cpp',
-      lineNum: 123,
-    };
-    assert.equal(createDiffUrl(params), '/c/test/+/42/2/file.cpp#123');
-
-    params.diffView = {
-      path: 'file.cpp',
-      lineNum: 123,
-      leftSide: true,
-    };
-    assert.equal(createDiffUrl(params), '/c/test/+/42/2/file.cpp#b123');
-  });
-
-  test('diff with repo name encoding', () => {
-    const params: ChangeViewState = {
-      ...createDiffViewState(),
-      patchNum: 12 as RevisionPatchSetNum,
-      repo: 'x+/y' as RepoName,
-      diffView: {path: 'x+y/path.cpp'},
-    };
-    assert.equal(createDiffUrl(params), '/c/x%252B/y/+/42/12/x%252By/path.cpp');
-  });
-});
diff --git a/polygerrit-ui/app/models/views/edit.ts b/polygerrit-ui/app/models/views/edit.ts
deleted file mode 100644
index a12cd85..0000000
--- a/polygerrit-ui/app/models/views/edit.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * @license
- * Copyright 2022 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-import {EDIT} from '../../api/rest-api';
-import {
-  encodeURL,
-  getBaseUrl,
-  getPatchRangeExpression,
-} from '../../utils/url-util';
-import {ChangeViewState} from './change';
-
-// TODO: Move to change.ts.
-export function createEditUrl(
-  state: Omit<ChangeViewState, 'view' | 'childView'>
-): string {
-  if (state.patchNum === undefined) {
-    state = {...state, patchNum: EDIT};
-  }
-  let range = getPatchRangeExpression(state);
-  if (range.length) range = '/' + range;
-
-  let suffix = `${range}/${encodeURL(state.editView?.path ?? '', true)}`;
-  suffix += ',edit';
-
-  if (state.editView?.lineNum) {
-    suffix += '#';
-    suffix += state.editView.lineNum;
-  }
-
-  if (state.repo) {
-    const encodedProject = encodeURL(state.repo, true);
-    return `${getBaseUrl()}/c/${encodedProject}/+/${state.changeNum}${suffix}`;
-  } else {
-    return `${getBaseUrl()}/c/${state.changeNum}${suffix}`;
-  }
-}
diff --git a/polygerrit-ui/app/models/views/edit_test.ts b/polygerrit-ui/app/models/views/edit_test.ts
deleted file mode 100644
index be8fb70..0000000
--- a/polygerrit-ui/app/models/views/edit_test.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * @license
- * Copyright 2022 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-import {assert} from '@open-wc/testing';
-import {RepoName, RevisionPatchSetNum} from '../../api/rest-api';
-import '../../test/common-test-setup';
-import {createEditViewState} from '../../test/test-data-generators';
-import {ChangeViewState} from './change';
-import {createEditUrl} from './edit';
-
-suite('edit view state tests', () => {
-  test('createEditUrl', () => {
-    const params: ChangeViewState = {
-      ...createEditViewState(),
-      patchNum: 12 as RevisionPatchSetNum,
-      editView: {path: 'x+y/path.cpp' as RepoName, lineNum: 31},
-    };
-    assert.equal(
-      createEditUrl(params),
-      '/c/test-project/+/42/12/x%252By/path.cpp,edit#31'
-    );
-
-    window.CANONICAL_PATH = '/base';
-    assert.equal(createEditUrl(params).substring(0, 5), '/base');
-    window.CANONICAL_PATH = undefined;
-  });
-});
diff --git a/polygerrit-ui/app/services/flags/flags.ts b/polygerrit-ui/app/services/flags/flags.ts
index 572e107..2a5dff2 100644
--- a/polygerrit-ui/app/services/flags/flags.ts
+++ b/polygerrit-ui/app/services/flags/flags.ts
@@ -22,4 +22,5 @@
   SUGGEST_EDIT = 'UiFeature__suggest_edit',
   MENTION_USERS = 'UiFeature__mention_users',
   RENDER_MARKDOWN = 'UiFeature__render_markdown',
+  REBASE_CHAIN = 'UiFeature__rebase_chain',
 }