C++11 override style change for athena

athena/extensions/athena_app_delegate_base.h

 // 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.
 
 #ifndef ATHENA_EXTENSIONS_ATHENA_APP_DELEGATE_BASE_H_
 #define ATHENA_EXTENSIONS_ATHENA_APP_DELEGATE_BASE_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "extensions/browser/app_window/app_delegate.h"
 
 namespace athena {
 
 class AthenaAppDelegateBase : public extensions::AppDelegate {
  public:
   AthenaAppDelegateBase();
-  virtual ~AthenaAppDelegateBase();
+  ~AthenaAppDelegateBase() override;
 
  private:
   class NewActivityContentsDelegate;
 
   // extensions::AppDelegate:
-  virtual void ResizeWebContents(content::WebContents* web_contents,
-                                 const gfx::Size& size) override;
-  virtual content::WebContents* OpenURLFromTab(
+  void ResizeWebContents(content::WebContents* web_contents,
+                         const gfx::Size& size) override;
+  content::WebContents* OpenURLFromTab(
       content::BrowserContext* context,
       content::WebContents* source,
       const content::OpenURLParams& params) override;
-  virtual void AddNewContents(content::BrowserContext* context,
-                              content::WebContents* new_contents,
-                              WindowOpenDisposition disposition,
-                              const gfx::Rect& initial_pos,
-                              bool user_gesture,
-                              bool* was_blocked) override;
-  virtual int PreferredIconSize() override;
-  virtual bool IsWebContentsVisible(
-      content::WebContents* web_contents) override;
-  virtual void SetTerminatingCallback(const base::Closure& callback) override;
+  void AddNewContents(content::BrowserContext* context,
+                      content::WebContents* new_contents,
+                      WindowOpenDisposition disposition,
+                      const gfx::Rect& initial_pos,
+                      bool user_gesture,
+                      bool* was_blocked) override;
+  int PreferredIconSize() override;
+  bool IsWebContentsVisible(content::WebContents* web_contents) override;
+  void SetTerminatingCallback(const base::Closure& callback) override;
 
   scoped_ptr<NewActivityContentsDelegate> new_window_contents_delegate_;
   base::Closure terminating_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AthenaAppDelegateBase);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_EXTENSIONS_ATHENA_APP_DELEGATE_BASE_H_