Update {virtual,override,final} to follow C++11 style chrome/browser/ui/webui/chromeos.

chrome/browser/ui/webui/chromeos/power_ui.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 "chrome/browser/ui/webui/chromeos/power_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 22 matching lines @@
 const char kOnRequestCpuIdleDataFunction[] =
     "powerUI.showCpuIdleData";
 
 const char kRequestCpuFreqDataCallback[] = "requestCpuFreqData";
 const char kOnRequestCpuFreqDataFunction[] =
     "powerUI.showCpuFreqData";
 
 class PowerMessageHandler : public content::WebUIMessageHandler {
  public:
   PowerMessageHandler();
-  virtual ~PowerMessageHandler();
+  ~PowerMessageHandler() override;
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   void OnGetBatteryChargeData(const base::ListValue* value);
   void OnGetCpuIdleData(const base::ListValue* value);
   void OnGetCpuFreqData(const base::ListValue* value);
   void GetJsStateOccupancyData(
       const std::vector<CpuDataCollector::StateOccupancySampleDeque>& data,
       const std::vector<std::string>& state_names,
       base::ListValue* js_data);
   void GetJsSystemResumedData(base::ListValue* value);
@@ skipping 176 matching lines @@
   html->SetDefaultResource(IDR_ABOUT_POWER_HTML);
 
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, html);
 }
 
 PowerUI::~PowerUI() {
 }
 
 }  // namespace chromeos