Standardize usage of virtual/override/final in cc/

cc/layers/layer_unittest.cc

 // Copyright 2011 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 "cc/layers/layer.h"
 
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/resources/layer_painter.h"
@@ skipping 34 matching lines @@
     InitializeSingleThreaded(client, base::MessageLoopProxy::current());
   }
 
   MOCK_METHOD0(SetNeedsCommit, void());
   MOCK_METHOD0(SetNeedsUpdateLayers, void());
   MOCK_METHOD0(SetNeedsFullTreeSync, void());
 };
 
 class MockLayerPainter : public LayerPainter {
  public:
-  virtual void Paint(SkCanvas* canvas, const gfx::Rect& content_rect) override {
-  }
+  void Paint(SkCanvas* canvas, const gfx::Rect& content_rect) override {}
 };
 
 class LayerTest : public testing::Test {
  public:
   LayerTest()
       : host_impl_(&proxy_, &shared_bitmap_manager_),
         fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {}
 
  protected:
   virtual void SetUp() override {
@@ skipping 1137 matching lines @@
     }
   }
 }
 
 class DrawsContentChangeLayer : public Layer {
  public:
   static scoped_refptr<DrawsContentChangeLayer> Create() {
     return make_scoped_refptr(new DrawsContentChangeLayer());
   }
 
-  virtual void SetLayerTreeHost(LayerTreeHost* host) override {
+  void SetLayerTreeHost(LayerTreeHost* host) override {
     Layer::SetLayerTreeHost(host);
     SetFakeDrawsContent(!fake_draws_content_);
   }
 
-  virtual bool HasDrawableContent() const override {
+  bool HasDrawableContent() const override {
     return fake_draws_content_ && Layer::HasDrawableContent();
   }
 
   void SetFakeDrawsContent(bool fake_draws_content) {
     fake_draws_content_ = fake_draws_content;
     UpdateDrawsContent(HasDrawableContent());
   }
 
  private:
   DrawsContentChangeLayer() : Layer(), fake_draws_content_(false) {}
-  virtual ~DrawsContentChangeLayer() override {}
+  ~DrawsContentChangeLayer() override {}
 
   bool fake_draws_content_;
 };
 
 TEST_F(LayerTest, DrawsContentChangedInSetLayerTreeHost) {
   scoped_refptr<Layer> root_layer = Layer::Create();
   scoped_refptr<DrawsContentChangeLayer> becomes_not_draws_content =
       DrawsContentChangeLayer::Create();
   scoped_refptr<DrawsContentChangeLayer> becomes_draws_content =
       DrawsContentChangeLayer::Create();
   root_layer->SetIsDrawable(true);
   becomes_not_draws_content->SetIsDrawable(true);
   becomes_not_draws_content->SetFakeDrawsContent(true);
   EXPECT_EQ(0, root_layer->NumDescendantsThatDrawContent());
   root_layer->AddChild(becomes_not_draws_content);
   EXPECT_EQ(0, root_layer->NumDescendantsThatDrawContent());
 
   becomes_draws_content->SetIsDrawable(true);
   root_layer->AddChild(becomes_draws_content);
   EXPECT_EQ(1, root_layer->NumDescendantsThatDrawContent());
 }
 
 }  // namespace
 }  // namespace cc