Remove overlayOpen class from GrChangeActions

The class is intended to hide sections on the mobile layout when
an overlay is opened.
To ease the migration of the dialogs to Dialog element in Change 349058,
temporarily remove the functionality.
This will be later re-added when the migration is complete.

Release-Notes: skip
Google-bug-id: b/255524908
Change-Id: I6488fd2019da8015dd457e70e36005ee3466747a
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 ca58dd5..eee5b67 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
@@ -548,12 +548,6 @@
 
   constructor() {
     super();
-    this.addEventListener('fullscreen-overlay-opened', () =>
-      this.handleHideBackgroundContent()
-    );
-    this.addEventListener('fullscreen-overlay-closed', () =>
-      this.handleShowBackgroundContent()
-    );
   }
 
   override connectedCallback() {
@@ -2097,18 +2091,6 @@
     );
   }
 
-  // private but used in test
-  handleHideBackgroundContent() {
-    assertIsDefined(this.mainContent, 'mainContent');
-    this.mainContent.classList.add('overlayOpen');
-  }
-
-  // private but used in test
-  handleShowBackgroundContent() {
-    assertIsDefined(this.mainContent, 'mainContent');
-    this.mainContent.classList.remove('overlayOpen');
-  }
-
   /**
    * Merge sources of change actions into a single ordered array of action
    * values.
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 a5431ed..63821b9 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
@@ -713,38 +713,6 @@
       );
     });
 
-    test('fullscreen-overlay-opened hides content', () => {
-      const spy = sinon.spy(element, 'handleHideBackgroundContent');
-      queryAndAssert<GrOverlay>(element, '#overlay').dispatchEvent(
-        new CustomEvent('fullscreen-overlay-opened', {
-          composed: true,
-          bubbles: true,
-        })
-      );
-      assert.isTrue(spy.called);
-      assert.isTrue(
-        queryAndAssert<Element>(element, '#mainContent').classList.contains(
-          'overlayOpen'
-        )
-      );
-    });
-
-    test('fullscreen-overlay-closed shows content', () => {
-      const spy = sinon.spy(element, 'handleShowBackgroundContent');
-      queryAndAssert<GrOverlay>(element, '#overlay').dispatchEvent(
-        new CustomEvent('fullscreen-overlay-closed', {
-          composed: true,
-          bubbles: true,
-        })
-      );
-      assert.isTrue(spy.called);
-      assert.isFalse(
-        queryAndAssert<Element>(element, '#mainContent').classList.contains(
-          'overlayOpen'
-        )
-      );
-    });
-
     test('setReviewOnRevert', () => {
       const review = {labels: {Foo: 1, 'Bar-Baz': -2}};
       const changeId = 1234 as NumericChangeId;
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 5fff2fd..d1d6f42 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
@@ -1148,11 +1148,6 @@
             flex: initial;
             margin: 0;
           }
-          /* Change actions are the only thing thant need to remain visible due
-            to the fact that they may have the currently visible overlay open. */
-          #mainContent.overlayOpen .hideOnMobileOverlay {
-            display: none;
-          }
           gr-reply-dialog {
             height: 100vh;
             min-width: initial;
@@ -1418,7 +1413,7 @@
       this.getEditMode()
     );
     return html` <div class="changeInfo">
-      <div class="changeInfo-column changeMetadata hideOnMobileOverlay">
+      <div class="changeInfo-column changeMetadata">
         <gr-change-metadata
           id="metadata"
           .change=${this.change}
@@ -1434,7 +1429,7 @@
         </gr-change-metadata>
       </div>
       <div id="mainChangeInfo" class="changeInfo-column mainChangeInfo">
-        <div id="commitAndRelated" class="hideOnMobileOverlay">
+        <div id="commitAndRelated">
           <div class="commitContainer">
             <h3 class="assistive-tech-only">Commit Message</h3>
             <div>
@@ -1588,7 +1583,6 @@
         </gr-file-list-header>
         <gr-file-list
           id="fileList"
-          class="hideOnMobileOverlay"
           .change=${this.change}
           .changeNum=${this.changeNum}
           .patchRange=${this.patchRange}
@@ -1694,7 +1688,6 @@
       <section class="changeLog">
         <h2 class="assistive-tech-only">Change Log</h2>
         <gr-messages-list
-          class="hideOnMobileOverlay"
           .labels=${this.change?.labels}
           .messages=${this.change?.messages}
           .reviewerUpdates=${this.change?.reviewer_updates}
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.ts b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.ts
index ccba81c..9b583eb 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.ts
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view_test.ts
@@ -423,11 +423,11 @@
             </div>
             <h2 class="assistive-tech-only">Change metadata</h2>
             <div class="changeInfo">
-              <div class="changeInfo-column changeMetadata hideOnMobileOverlay">
+              <div class="changeInfo-column changeMetadata">
                 <gr-change-metadata id="metadata"> </gr-change-metadata>
               </div>
               <div class="changeInfo-column mainChangeInfo" id="mainChangeInfo">
-                <div class="hideOnMobileOverlay" id="commitAndRelated">
+                <div id="commitAndRelated">
                   <div class="commitContainer">
                     <h3 class="assistive-tech-only">Commit Message</h3>
                     <div>
@@ -509,8 +509,7 @@
           <section class="tabContent">
             <div>
               <gr-file-list-header id="fileListHeader"> </gr-file-list-header>
-              <gr-file-list class="hideOnMobileOverlay" id="fileList">
-              </gr-file-list>
+              <gr-file-list id="fileList"> </gr-file-list>
             </div>
           </section>
           <gr-endpoint-decorator name="change-view-integration">
@@ -531,7 +530,7 @@
           </paper-tabs>
           <section class="changeLog">
             <h2 class="assistive-tech-only">Change Log</h2>
-            <gr-messages-list class="hideOnMobileOverlay"> </gr-messages-list>
+            <gr-messages-list> </gr-messages-list>
           </section>
         </div>
         <gr-apply-fix-dialog id="applyFixDialog"> </gr-apply-fix-dialog>