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

chrome/browser/command_updater_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.
 
 #include "chrome/browser/command_updater.h"
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/command_observer.h"
 #include "chrome/browser/command_updater_delegate.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class FakeCommandUpdaterDelegate : public CommandUpdaterDelegate {
  public:
-  virtual void ExecuteCommandWithDisposition(int id,
-                                             WindowOpenDisposition) override {
+  void ExecuteCommandWithDisposition(int id, WindowOpenDisposition) override {
     EXPECT_EQ(1, id);
   }
 };
 
 class FakeCommandObserver : public CommandObserver {
  public:
   FakeCommandObserver() : enabled_(true) {}
 
-  virtual void EnabledStateChangedForCommand(int id, bool enabled) override {
+  void EnabledStateChangedForCommand(int id, bool enabled) override {
     enabled_ = enabled;
   }
 
   bool enabled() const { return enabled_; }
 
  private:
   bool enabled_;
 };
 
 TEST(CommandUpdaterTest, TestBasicAPI) {
@@ skipping 64 matching lines @@
 
   // Remove one observer and update the command. Check the states, which
   // should be different.
   command_updater.RemoveCommandObserver(&observer_remove);
   command_updater.UpdateCommandEnabled(1, false);
   command_updater.UpdateCommandEnabled(2, false);
   command_updater.UpdateCommandEnabled(3, false);
   EXPECT_TRUE(observer_remove.enabled());
   EXPECT_FALSE(observer_keep.enabled());
 }