Standardize usage of virtual/override/final in cc/

cc/surfaces/surface_factory_unittest.cc

 // Copyright 2014 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/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_factory_client.h"
 #include "cc/surfaces/surface_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/size.h"
 
 namespace cc {
 namespace {
 
 class TestSurfaceFactoryClient : public SurfaceFactoryClient {
  public:
   TestSurfaceFactoryClient() {}
-  virtual ~TestSurfaceFactoryClient() {}
+  ~TestSurfaceFactoryClient() override {}
 
-  virtual void ReturnResources(
-      const ReturnedResourceArray& resources) override {
+  void ReturnResources(const ReturnedResourceArray& resources) override {
     returned_resources_.insert(
         returned_resources_.end(), resources.begin(), resources.end());
   }
 
   const ReturnedResourceArray& returned_resources() const {
     return returned_resources_;
   }
 
   void clear_returned_resources() { returned_resources_.clear(); }
 
@@ skipping 360 matching lines @@
   factory_.Create(id2, gfx::Size(5, 5));
   sequence.clear();
   sequence.insert(SurfaceSequence(0, 6));
   DCHECK(manager_.GetSurfaceForId(id2));
   factory_.DestroyOnSequence(id2, sequence);
   DCHECK(!manager_.GetSurfaceForId(id2));
 }
 
 }  // namespace
 }  // namespace cc