PolyGerrit: Replace content with slot part 2

This change makes the following replacement:

<content select=".header"> replace it with
the slot equivalent.

Change-Id: Icc68576a3b44559775103163febd429194802981
diff --git a/polygerrit-ui/app/elements/admin/gr-admin-group-list/gr-admin-group-list.html b/polygerrit-ui/app/elements/admin/gr-admin-group-list/gr-admin-group-list.html
index 9fe10bc..2d84179 100644
--- a/polygerrit-ui/app/elements/admin/gr-admin-group-list/gr-admin-group-list.html
+++ b/polygerrit-ui/app/elements/admin/gr-admin-group-list/gr-admin-group-list.html
@@ -70,10 +70,10 @@
           confirm-label="Create"
           on-confirm="_handleCreateGroup"
           on-cancel="_handleCloseCreate">
-        <div class="header">
+        <div class="header" slot="header">
           Create Group
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           <gr-create-group-dialog
               has-new-group-name="{{_hasNewGroupName}}"
               params="[[params]]"
diff --git a/polygerrit-ui/app/elements/admin/gr-confirm-delete-item-dialog/gr-confirm-delete-item-dialog.html b/polygerrit-ui/app/elements/admin/gr-confirm-delete-item-dialog/gr-confirm-delete-item-dialog.html
index e132100..da20181 100644
--- a/polygerrit-ui/app/elements/admin/gr-confirm-delete-item-dialog/gr-confirm-delete-item-dialog.html
+++ b/polygerrit-ui/app/elements/admin/gr-confirm-delete-item-dialog/gr-confirm-delete-item-dialog.html
@@ -30,8 +30,8 @@
         confirm-label="Delete [[_computeItemName(itemType)]]"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">[[_computeItemName(itemType)]] Deletion</div>
-      <div class="main">
+      <div class="header" slot="header">[[_computeItemName(itemType)]] Deletion</div>
+      <div class="main" slot="main">
         <label for="branchInput">
           Do you really want to delete the following [[_computeItemName(itemType)]]?
         </label>
diff --git a/polygerrit-ui/app/elements/admin/gr-project-commands/gr-project-commands.html b/polygerrit-ui/app/elements/admin/gr-project-commands/gr-project-commands.html
index 883a802..4274749 100644
--- a/polygerrit-ui/app/elements/admin/gr-project-commands/gr-project-commands.html
+++ b/polygerrit-ui/app/elements/admin/gr-project-commands/gr-project-commands.html
@@ -77,10 +77,10 @@
           disabled="[[!_canCreate]]"
           on-confirm="_handleCreateChange"
           on-cancel="_handleCloseCreateChange">
-        <div class="header">
+        <div class="header" slot="header">
           Create Change
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           <gr-create-change-dialog
               id="createNewChangeModal"
               can-create="{{_canCreate}}"
diff --git a/polygerrit-ui/app/elements/admin/gr-project-detail-list/gr-project-detail-list.html b/polygerrit-ui/app/elements/admin/gr-project-detail-list/gr-project-detail-list.html
index 85e8f83..0ed278a 100644
--- a/polygerrit-ui/app/elements/admin/gr-project-detail-list/gr-project-detail-list.html
+++ b/polygerrit-ui/app/elements/admin/gr-project-detail-list/gr-project-detail-list.html
@@ -187,10 +187,10 @@
           confirm-label="Create"
           on-confirm="_handleCreateItem"
           on-cancel="_handleCloseCreate">
-        <div class="header">
+        <div class="header" slot="header">
           Create [[_computeItemName(detailType)]]
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           <gr-create-pointer-dialog
               id="createNewModal"
               detail-type="[[_computeItemName(detailType)]]"
diff --git a/polygerrit-ui/app/elements/admin/gr-project-list/gr-project-list.html b/polygerrit-ui/app/elements/admin/gr-project-list/gr-project-list.html
index 6c45704..958d2dc 100644
--- a/polygerrit-ui/app/elements/admin/gr-project-list/gr-project-list.html
+++ b/polygerrit-ui/app/elements/admin/gr-project-list/gr-project-list.html
@@ -81,10 +81,10 @@
           confirm-label="Create"
           on-confirm="_handleCreateProject"
           on-cancel="_handleCloseCreate">
-        <div class="header">
+        <div class="header" slot="header">
           Create Project
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           <gr-create-project-dialog
               has-new-project-name="{{_hasNewProjectName}}"
               params="[[params]]"
diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
index 79a9245..8007993 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
@@ -179,10 +179,10 @@
           confirm-label="Delete"
           on-cancel="_handleConfirmDialogCancel"
           on-confirm="_handleDeleteConfirm">
-        <div class="header">
+        <div class="header" slot="header">
           Delete Change
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           Do you really want to delete the change?
         </div>
       </gr-confirm-dialog>
@@ -192,10 +192,10 @@
           confirm-label="Delete"
           on-cancel="_handleConfirmDialogCancel"
           on-confirm="_handleDeleteEditConfirm">
-        <div class="header">
+        <div class="header" slot="header">
           Delete Change Edit
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           Do you really want to delete the edit?
         </div>
       </gr-confirm-dialog>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-abandon-dialog/gr-confirm-abandon-dialog.html b/polygerrit-ui/app/elements/change/gr-confirm-abandon-dialog/gr-confirm-abandon-dialog.html
index d3bf159..a18e2a2 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-abandon-dialog/gr-confirm-abandon-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-abandon-dialog/gr-confirm-abandon-dialog.html
@@ -55,8 +55,8 @@
         confirm-label="Abandon"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Abandon Change</div>
-      <div class="main">
+      <div class="header" slot="header">Abandon Change</div>
+      <div class="main" slot="main">
         <label for="messageInput">Abandon Message</label>
         <iron-autogrow-textarea
             id="messageInput"
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog.html b/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog.html
index 5151280..34688ad 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-cherrypick-dialog/gr-confirm-cherrypick-dialog.html
@@ -62,8 +62,8 @@
         confirm-label="Cherry Pick"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Cherry Pick Change to Another Branch</div>
-      <div class="main">
+      <div class="header" slot="header">Cherry Pick Change to Another Branch</div>
+      <div class="main" slot="main">
         <label for="branchInput">
           Cherry Pick to branch
         </label>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.html b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.html
index ec6bfb4..2e530d9 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-move-dialog/gr-confirm-move-dialog.html
@@ -61,8 +61,8 @@
         confirm-label="Move Change"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Move Change to Another Branch</div>
-      <div class="main">
+      <div class="header" slot="header">Move Change to Another Branch</div>
+      <div class="main" slot="main">
         <p class="warning">
           Warning: moving a change will not change its parents.
         </p>
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.html b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.html
index 2772594..582a03c 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.html
@@ -52,8 +52,8 @@
         confirm-label="Rebase"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Confirm rebase</div>
-      <div class="main">
+      <div class="header" slot="header">Confirm rebase</div>
+      <div class="main" slot="main">
         <div id="rebaseOnParent" class="rebaseOption"
             hidden$="[[!_displayParentOption(rebaseOnCurrent, hasParent)]]">
           <input id="rebaseOnParentInput"
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog.html b/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog.html
index 92e8de3..5b39547 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog.html
+++ b/polygerrit-ui/app/elements/change/gr-confirm-revert-dialog/gr-confirm-revert-dialog.html
@@ -50,8 +50,8 @@
         confirm-label="Revert"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Revert Merged Change</div>
-      <div class="main">
+      <div class="header" slot="header">Revert Merged Change</div>
+      <div class="main" slot="main">
         <label for="messageInput">
           Revert Commit Message
         </label>
diff --git a/polygerrit-ui/app/elements/diff/gr-confirm-delete-comment-dialog/gr-confirm-delete-comment-dialog.html b/polygerrit-ui/app/elements/diff/gr-confirm-delete-comment-dialog/gr-confirm-delete-comment-dialog.html
index 999c883..8cefabb 100644
--- a/polygerrit-ui/app/elements/diff/gr-confirm-delete-comment-dialog/gr-confirm-delete-comment-dialog.html
+++ b/polygerrit-ui/app/elements/diff/gr-confirm-delete-comment-dialog/gr-confirm-delete-comment-dialog.html
@@ -55,8 +55,8 @@
         confirm-label="Delete"
         on-confirm="_handleConfirmTap"
         on-cancel="_handleCancelTap">
-      <div class="header">Delete Comment</div>
-      <div class="main">
+      <div class="header" slot="header">Delete Comment</div>
+      <div class="main" slot="main">
         <label for="messageInput">Enter comment delete reason</label>
         <iron-autogrow-textarea
             id="messageInput"
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
index 5eb0a5d..62527ca 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment/gr-diff-comment.html
@@ -333,10 +333,10 @@
           confirm-label="Discard"
           on-confirm="_handleConfirmDiscard"
           on-cancel="_closeConfirmDiscardOverlay">
-        <div class="header">
+        <div class="header" slot="header">
           Discard comment
         </div>
-        <div class="main">
+        <div class="main" slot="main">
           Are you sure you want to discard this draft comment?
         </div>
       </gr-confirm-dialog>
diff --git a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.html b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.html
index 9eb4974..c769d25 100644
--- a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.html
+++ b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls.html
@@ -85,8 +85,8 @@
           confirm-label="Edit"
           on-confirm="_handleEditConfirm"
           on-cancel="_handleDialogCancel">
-        <div class="header">Edit a file</div>
-        <div class="main">
+        <div class="header" slot="header">Edit a file</div>
+        <div class="main" slot="main">
           <gr-autocomplete
               placeholder="Enter an existing or new full file path."
               query="[[_query]]"
@@ -100,8 +100,8 @@
           confirm-label="Delete"
           on-confirm="_handleDeleteConfirm"
           on-cancel="_handleDialogCancel">
-        <div class="header">Delete a file</div>
-        <div class="main">
+        <div class="header" slot="header">Delete a file</div>
+        <div class="main" slot="main">
           <gr-autocomplete
               placeholder="Enter an existing full file path."
               query="[[_query]]"
@@ -115,8 +115,8 @@
           confirm-label="Rename"
           on-confirm="_handleRenameConfirm"
           on-cancel="_handleDialogCancel">
-        <div class="header">Rename a file</div>
-        <div class="main">
+        <div class="header" slot="header">Rename a file</div>
+        <div class="main" slot="main">
           <gr-autocomplete
               placeholder="Enter an existing full file path."
               query="[[_query]]"
@@ -134,8 +134,8 @@
           confirm-label="Restore"
           on-confirm="_handleRestoreConfirm"
           on-cancel="_handleDialogCancel">
-        <div class="header">Restore this file?</div>
-        <div class="main">
+        <div class="header" slot="header">Restore this file?</div>
+        <div class="main" slot="main">
           <input
               is="iron-input"
               disabled
diff --git a/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.html b/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.html
index 320c908..6801dea 100644
--- a/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.html
+++ b/polygerrit-ui/app/elements/shared/gr-confirm-dialog/gr-confirm-dialog.html
@@ -55,8 +55,8 @@
       }
     </style>
     <div class="container">
-      <header><content select=".header"></content></header>
-      <main><content select=".main"></content></main>
+      <header><slot name="header"></slot></header>
+      <main><slot name="main"></slot></main>
       <footer>
         <gr-button link on-tap="_handleCancelTap">[[cancelLabel]]</gr-button>
         <gr-button link primary on-tap="_handleConfirmTap" disabled="[[disabled]]">