[MD Bookmarks] Support elision of bookmark names in the bookmark toast.

chrome/browser/resources/md_bookmarks/command_manager.js

 // Copyright 2017 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.
 
 /**
  * @fileoverview Element which shows context menus and handles keyboard
  * shortcuts.
  */
 cr.define('bookmarks', function() {
 
@@ skipping 170 matching lines @@
           break;
         case Command.COPY:
           var idList = Array.from(itemIds);
           chrome.bookmarkManagerPrivate.copy(idList, function() {
             bookmarks.ToastManager.getInstance().show(
                 loadTimeData.getString('toastUrlCopied'), false);
           });
           break;
         case Command.DELETE:
           var idList = Array.from(this.minimizeDeletionSet_(itemIds));
-          var labelPromise;
-          if (idList.length == 1) {
-            // TODO(calamity): fold this separate label into
-            // 'toastItemsDeleted'.
-            labelPromise = Promise.resolve(loadTimeData.getStringF(
-                'toastItemDeleted', this.getState().nodes[idList[0]].title));
-          } else {
-            labelPromise = cr.sendWithPromise(
-                'getPluralString', 'toastItemsDeleted', idList.length);
-          }
+          var title = this.getState().nodes[idList[0]].title;
+          var labelPromise = cr.sendWithPromise(
+              'getPluralString', 'toastItemsDeleted', idList.length);
           chrome.bookmarkManagerPrivate.removeTrees(idList, function() {
             labelPromise.then(function(label) {
-              bookmarks.ToastManager.getInstance().show(label, true);
-            });
+              var pieces = loadTimeData.getSubstitutedStringPieces(label, title)
+                               .map(function(p) {
+                                 // Make the bookmark name collapsible.
+                                 p.collapsible = !!p.arg;
+                                 return p;
+                               })
+              bookmarks.ToastManager.getInstance().showForStringPieces(
+                  pieces, true);
+            }.bind(this));
           }.bind(this));
           break;
         case Command.UNDO:
           chrome.bookmarkManagerPrivate.undo();
           bookmarks.ToastManager.getInstance().hide();
           break;
         case Command.REDO:
           chrome.bookmarkManagerPrivate.redo();
           break;
         case Command.OPEN_NEW_TAB:
@@ skipping 227 matching lines @@
 
   /** @return {!bookmarks.CommandManager} */
   CommandManager.getInstance = function() {
     return assert(CommandManager.instance_);
   };
 
   return {
     CommandManager: CommandManager,
   };
 });