Standardize usage of virtual/override/final in components/

components/bookmarks/browser/bookmark_utils_unittest.cc

 // Copyright 2014 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.
 
 #include "components/bookmarks/browser/bookmark_utils.h"
 
 #include <vector>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 36 matching lines @@
     // The undo framework is not used under Android.  Thus the group change
     // events will not be fired and so should not be tested for Android.
 #if !defined(OS_ANDROID)
     EXPECT_EQ(grouped_changes_beginning_count_, expected_beginning_count);
     EXPECT_EQ(grouped_changes_ended_count_, expected_ended_count);
 #endif
   }
 
  private:
   // BaseBookmarkModelObserver:
-  virtual void BookmarkModelChanged() override {}
+  void BookmarkModelChanged() override {}
 
-  virtual void GroupedBookmarkChangesBeginning(BookmarkModel* model) override {
+  void GroupedBookmarkChangesBeginning(BookmarkModel* model) override {
     ++grouped_changes_beginning_count_;
   }
 
-  virtual void GroupedBookmarkChangesEnded(BookmarkModel* model) override {
+  void GroupedBookmarkChangesEnded(BookmarkModel* model) override {
     ++grouped_changes_ended_count_;
   }
 
   int grouped_changes_beginning_count_;
   int grouped_changes_ended_count_;
 
   // Clipboard requires a message loop.
   base::MessageLoopForUI loop_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkUtilsTest);
@@ skipping 479 matching lines @@
   model->GetNodesByURL(url, &nodes);
   ASSERT_EQ(1u, nodes.size());
   EXPECT_TRUE(model->bookmark_bar_node()->empty());
   EXPECT_TRUE(model->other_node()->empty());
   EXPECT_TRUE(model->mobile_node()->empty());
   EXPECT_EQ(1, extra_node->child_count());
 }
 
 }  // namespace
 }  // namespace bookmarks