Standardize usage of virtual/override/final in chrome/browser/sync/

chrome/browser/sync/profile_sync_service_bookmark_unittest.cc

 // Copyright (c) 2012 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.
 
 // TODO(akalin): This file is basically just a unit test for
 // BookmarkChangeProcessor.  Write unit tests for
 // BookmarkModelAssociator separately.
 
 #include <map>
 #include <queue>
@@ skipping 261 matching lines @@
   syncer::ChangeRecordList changes_;
 };
 
 class ExtensiveChangesBookmarkModelObserver : public BaseBookmarkModelObserver {
  public:
   explicit ExtensiveChangesBookmarkModelObserver()
       : started_count_(0),
         completed_count_at_started_(0),
         completed_count_(0) {}
 
-  virtual void ExtensiveBookmarkChangesBeginning(
-      BookmarkModel* model) override {
+  void ExtensiveBookmarkChangesBeginning(BookmarkModel* model) override {
     ++started_count_;
     completed_count_at_started_ = completed_count_;
   }
 
-  virtual void ExtensiveBookmarkChangesEnded(BookmarkModel* model) override {
+  void ExtensiveBookmarkChangesEnded(BookmarkModel* model) override {
     ++completed_count_;
   }
 
-  virtual void BookmarkModelChanged() override {}
+  void BookmarkModelChanged() override {}
 
   int get_started() const {
     return started_count_;
   }
 
   int get_completed_count_at_started() const {
     return completed_count_at_started_;
   }
 
   int get_completed() const {
@@ skipping 1882 matching lines @@
   ExpectModelMatch();
 
   // Then simulate the add call arriving late.
   change_processor_->BookmarkNodeAdded(model_, model_->bookmark_bar_node(), 0);
   ExpectModelMatch();
 }
 
 }  // namespace
 
 }  // namespace browser_sync