Standardize usage of virtual/override/final in cc/

cc/input/top_controls_manager_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 "cc/input/top_controls_manager.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "cc/input/top_controls_manager_client.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 17 matching lines @@
       : host_impl_(&proxy_, &shared_bitmap_manager_),
         redraw_needed_(false),
         update_draw_properties_needed_(false),
         top_controls_top_offset_(0.f),
         top_controls_show_threshold_(top_controls_show_threshold),
         top_controls_hide_threshold_(top_controls_hide_threshold) {
     active_tree_ = LayerTreeImpl::create(&host_impl_);
     root_scroll_layer_ = LayerImpl::Create(active_tree_.get(), 1);
   }
 
-  virtual ~MockTopControlsManagerClient() {}
+  ~MockTopControlsManagerClient() override {}
 
-  virtual void DidChangeTopControlsPosition() override {
+  void DidChangeTopControlsPosition() override {
     redraw_needed_ = true;
     update_draw_properties_needed_ = true;
   }
 
-  virtual bool HaveRootScrollLayer() const override {
-    return true;
-  }
+  bool HaveRootScrollLayer() const override { return true; }
 
-  virtual void SetControlsTopOffset(float offset) override {
+  void SetControlsTopOffset(float offset) override {
     top_controls_top_offset_ = offset;
   }
 
-  virtual float ControlsTopOffset() const override {
-    return top_controls_top_offset_;
-  }
+  float ControlsTopOffset() const override { return top_controls_top_offset_; }
 
   LayerImpl* rootScrollLayer() {
     return root_scroll_layer_.get();
   }
 
   TopControlsManager* manager() {
     if (!manager_) {
       manager_ = TopControlsManager::Create(this,
                                             kTopControlsHeight,
                                             top_controls_show_threshold_,
@@ skipping 311 matching lines @@
     manager->Animate(time);
     EXPECT_GT(manager->ControlsTopOffset(), previous_offset);
     previous_offset = manager->ControlsTopOffset();
   }
   EXPECT_FALSE(manager->animation());
   EXPECT_EQ(0.f, manager->ControlsTopOffset());
 }
 
 }  // namespace
 }  // namespace cc