Standardize usage of virtual/override/final specifiers.

content/browser/web_contents/web_contents_impl_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 "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/media/audio_stream_monitor.h"
@@ skipping 234 matching lines @@
   void set_assign_site_for_url(bool assign) {
     assign_site_for_url_ = assign;
   }
 
  private:
   bool assign_site_for_url_;
 };
 
 class WebContentsImplTest : public RenderViewHostImplTestHarness {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
     WebUIControllerFactory::RegisterFactory(&factory_);
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     WebUIControllerFactory::UnregisterFactoryForTesting(&factory_);
     RenderViewHostImplTestHarness::TearDown();
   }
 
  private:
   WebContentsImplTestWebUIControllerFactory factory_;
 };
 
 class TestWebContentsObserver : public WebContentsObserver {
  public:
@@ skipping 2517 matching lines @@
 
   // Destroy the remote player. No power save blockers should remain.
   rfh->OnMessageReceived(
       FrameHostMsg_MediaPausedNotification(0, kPlayerRemoteId));
   EXPECT_FALSE(contents()->has_video_power_save_blocker_for_testing());
   EXPECT_FALSE(contents()->has_audio_power_save_blocker_for_testing());
 }
 #endif
 
 }  // namespace content