MD Bookmarks: Prevent keyboard shortcuts when the toolbar/dialogs are focused

chrome/browser/resources/md_bookmarks/list.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 Polymer({
   is: 'bookmarks-list',
 
   behaviors: [
     bookmarks.StoreClient,
   ],
@@ skipping 161 matching lines @@
           clear: !e.ctrlKey,
           range: e.shiftKey,
           toggle: false,
         };
 
         this.dispatch(bookmarks.actions.selectItem(
             this.displayedIds_[focusedIndex], this.getState(), config));
       }
     }
 
+    // Prevent the iron-list from changing focus on enter.
+    if (e.path[0] instanceof HTMLButtonElement && e.key == 'Enter')
+      handled = true;
+
+    if (!handled) {
+      handled = bookmarks.CommandManager.getInstance().handleKeyEvent(
+          e, this.getState().selection.items);
+    }
+
     if (handled)
       e.stopPropagation();
   },
 });