Standardize usage of virtual/override/final in cc/

cc/test/fake_tile_manager_client.h

Index: cc/test/fake_tile_manager_client.h
diff --git a/cc/test/fake_tile_manager_client.h b/cc/test/fake_tile_manager_client.h
index fde6c52887e10de49af35cd7d8affba2f93232a5..4b4246864909f8687a1dbd380c6bb2a609da46d0 100644
--- a/cc/test/fake_tile_manager_client.h
+++ b/cc/test/fake_tile_manager_client.h
@@ -14,17 +14,16 @@ namespace cc {
 class FakeTileManagerClient : public TileManagerClient {
  public:
   FakeTileManagerClient();
-  virtual ~FakeTileManagerClient();
+  ~FakeTileManagerClient() override;
 
   // TileManagerClient implementation.
-  virtual const std::vector<PictureLayerImpl*>& GetPictureLayers()
-      const override;
-  virtual void NotifyReadyToActivate() override {}
-  virtual void NotifyTileStateChanged(const Tile* tile) override {}
-  virtual void BuildRasterQueue(RasterTilePriorityQueue* queue,
-                                TreePriority tree_priority) override {}
-  virtual void BuildEvictionQueue(EvictionTilePriorityQueue* queue,
-                                  TreePriority tree_priority) override {}
+  const std::vector<PictureLayerImpl*>& GetPictureLayers() const override;
+  void NotifyReadyToActivate() override {}
+  void NotifyTileStateChanged(const Tile* tile) override {}
+  void BuildRasterQueue(RasterTilePriorityQueue* queue,
+                        TreePriority tree_priority) override {}
+  void BuildEvictionQueue(EvictionTilePriorityQueue* queue,
+                          TreePriority tree_priority) override {}
 
  private:
   std::vector<PictureLayerImpl*> picture_layers_;