Standardize usage of virtual/override/final in content/

content/child/power_monitor_broadcast_source.cc

 // Copyright (c) 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 "content/child/power_monitor_broadcast_source.h"
 
 #include "base/message_loop/message_loop.h"
 #include "content/common/power_monitor_messages.h"
 #include "ipc/message_filter.h"
 
 namespace content {
 
 class PowerMessageFilter : public IPC::MessageFilter {
  public:
   PowerMessageFilter(
       PowerMonitorBroadcastSource* source,
       scoped_refptr<base::MessageLoopProxy> message_loop)
       : source_(source),
         message_loop_(message_loop) {
   }
 
-  virtual bool OnMessageReceived(const IPC::Message& message) override {
+  bool OnMessageReceived(const IPC::Message& message) override {
     bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(PowerMessageFilter, message)
       IPC_MESSAGE_HANDLER(PowerMonitorMsg_PowerStateChange, OnPowerStateChange)
       IPC_MESSAGE_HANDLER(PowerMonitorMsg_Suspend, OnSuspend)
       IPC_MESSAGE_HANDLER(PowerMonitorMsg_Resume, OnResume)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
     return handled;
   }
 
   void RemoveSource() {
     source_ = NULL;
   }
 
  private:
   friend class base::RefCounted<PowerMessageFilter>;
 
-  virtual ~PowerMessageFilter() {};
+  ~PowerMessageFilter() override{};
 
   void OnPowerStateChange(bool on_battery_power) {
     message_loop_->PostTask(FROM_HERE,
         base::Bind(&PowerMessageFilter::NotifySourcePowerStateChange, this,
             on_battery_power));
   }
   void OnSuspend() {
     message_loop_->PostTask(FROM_HERE,
         base::Bind(&PowerMessageFilter::NotifySourceSuspend, this));
   }
@@ skipping 48 matching lines @@
 
 void PowerMonitorBroadcastSource::OnSuspend() {
   ProcessPowerEvent(PowerMonitorSource::SUSPEND_EVENT);
 }
 
 void PowerMonitorBroadcastSource::OnResume() {
   ProcessPowerEvent(PowerMonitorSource::RESUME_EVENT);
 }
 
 }  // namespace content