Standardize usage of virtual/override/final in cc/

cc/test/fake_content_layer_client.h

 // Copyright 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.
 
 #ifndef CC_TEST_FAKE_CONTENT_LAYER_CLIENT_H_
 #define CC_TEST_FAKE_CONTENT_LAYER_CLIENT_H_
 
 #include <utility>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "cc/layers/content_layer_client.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "ui/gfx/rect.h"
 
 namespace cc {
 
 class FakeContentLayerClient : public ContentLayerClient {
  public:
   struct BitmapData {
     SkBitmap bitmap;
     gfx::Point point;
     SkPaint paint;
   };
 
   FakeContentLayerClient();
-  virtual ~FakeContentLayerClient();
+  ~FakeContentLayerClient() override;
 
-  virtual void PaintContents(
+  void PaintContents(
       SkCanvas* canvas,
       const gfx::Rect& rect,
       ContentLayerClient::GraphicsContextStatus gc_status) override;
-  virtual void DidChangeLayerCanUseLCDText() override {}
-  virtual bool FillsBoundsCompletely() const override;
+  void DidChangeLayerCanUseLCDText() override {}
+  bool FillsBoundsCompletely() const override;
 
   void set_fill_with_nonsolid_color(bool nonsolid) {
     fill_with_nonsolid_color_ = nonsolid;
   }
 
   void add_draw_rect(const gfx::RectF& rect, const SkPaint& paint) {
     draw_rects_.push_back(std::make_pair(rect, paint));
   }
 
   void add_draw_bitmap(const SkBitmap& bitmap,
@@ skipping 19 matching lines @@
   bool fill_with_nonsolid_color_;
   RectPaintVector draw_rects_;
   BitmapVector draw_bitmaps_;
   SkCanvas* last_canvas_;
   ContentLayerClient::GraphicsContextStatus last_context_status_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_CONTENT_LAYER_CLIENT_H_