Standardize usage of virtual/override/final in cc/

cc/scheduler/scheduler.h

 // 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.
 
 #ifndef CC_SCHEDULER_SCHEDULER_H_
 #define CC_SCHEDULER_SCHEDULER_H_
 
 #include <deque>
 #include <string>
 
@@ skipping 73 matching lines @@
       base::PowerMonitor* power_monitor) {
     SchedulerFrameSourcesConstructor frame_sources_constructor;
     return make_scoped_ptr(new Scheduler(client,
                                          scheduler_settings,
                                          layer_tree_host_id,
                                          task_runner,
                                          power_monitor,
                                          &frame_sources_constructor));
   }
 
-  virtual ~Scheduler();
+  ~Scheduler() override;
 
   // base::PowerObserver method.
-  virtual void OnPowerStateChange(bool on_battery_power) override;
+  void OnPowerStateChange(bool on_battery_power) override;
 
   const SchedulerSettings& settings() const { return settings_; }
 
   void CommitVSyncParameters(base::TimeTicks timebase,
                              base::TimeDelta interval);
   void SetEstimatedParentDrawTime(base::TimeDelta draw_time);
 
   void SetCanStart();
 
   void SetVisible(bool visible);
@@ skipping 43 matching lines @@
 
   bool WillDrawIfNeeded() const;
 
   base::TimeTicks AnticipatedDrawTime() const;
 
   void NotifyBeginMainFrameStarted();
 
   base::TimeTicks LastBeginImplFrameTime();
 
   scoped_refptr<base::debug::ConvertableToTraceFormat> AsValue() const;
-  virtual void AsValueInto(base::debug::TracedValue* value) const override;
+  void AsValueInto(base::debug::TracedValue* value) const override;
 
   void SetContinuousPainting(bool continuous_painting) {
     state_machine_.SetContinuousPainting(continuous_painting);
   }
 
   // BeginFrameObserverMixin
-  virtual bool OnBeginFrameMixInDelegate(const BeginFrameArgs& args) override;
+  bool OnBeginFrameMixInDelegate(const BeginFrameArgs& args) override;
 
  protected:
   Scheduler(SchedulerClient* client,
             const SchedulerSettings& scheduler_settings,
             int layer_tree_host_id,
             const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
             base::PowerMonitor* power_monitor,
             SchedulerFrameSourcesConstructor* frame_sources_constructor);
 
   // virtual for testing - Don't call these in the constructor or
@@ skipping 70 matching lines @@
 
   friend class SchedulerFrameSourcesConstructor;
   friend class TestSchedulerFrameSourcesConstructor;
 
   DISALLOW_COPY_AND_ASSIGN(Scheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_SCHEDULER_H_