Standardize usage of virtual/override/final specifiers.

ash/desktop_background/wallpaper_resizer_unittest.cc

 // Copyright 2013 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 "ash/desktop_background/wallpaper_resizer.h"
 
 #include "ash/desktop_background/wallpaper_resizer_observer.h"
 #include "base/message_loop/message_loop.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 43 matching lines @@
 }  // namespace
 
 namespace ash {
 
 class WallpaperResizerTest : public testing::Test,
                              public WallpaperResizerObserver {
  public:
   WallpaperResizerTest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_) {
   }
-  virtual ~WallpaperResizerTest() {}
+  ~WallpaperResizerTest() override {}
 
   gfx::ImageSkia Resize(const gfx::ImageSkia& image,
                         const gfx::Size& target_size,
                         WallpaperLayout layout) {
     scoped_ptr<WallpaperResizer> resizer;
     resizer.reset(new WallpaperResizer(image, target_size, layout));
     resizer->AddObserver(this);
     resizer->StartResize();
     WaitForResize();
     resizer->RemoveObserver(this);
     return resizer->image();
   }
 
   void WaitForResize() {
     message_loop_.Run();
   }
 
-  virtual void OnWallpaperResized() override {
-    message_loop_.Quit();
-  }
+  void OnWallpaperResized() override { message_loop_.Quit(); }
 
  private:
   base::MessageLoop message_loop_;
   content::TestBrowserThread ui_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(WallpaperResizerTest);
 };
 
 TEST_F(WallpaperResizerTest, BasicResize) {
   // Keeps in sync with WallpaperLayout enum.
@@ skipping 53 matching lines @@
   WallpaperResizer resizer(image, gfx::Size(10, 20), WALLPAPER_LAYOUT_STRETCH);
   EXPECT_EQ(WallpaperResizer::GetImageId(image), resizer.original_image_id());
   resizer.AddObserver(this);
   resizer.StartResize();
   WaitForResize();
   resizer.RemoveObserver(this);
   EXPECT_EQ(WallpaperResizer::GetImageId(image), resizer.original_image_id());
 }
 
 }  // namespace ash