Update {virtual,override,final} to follow C++11 style.

chrome/browser/android/shortcut_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/basictypes.h"
@@ skipping 60 matching lines @@
   // Use FaviconService to get the best available favicon and create the
   // shortcut using it. This is used when no Manifest icons are available or
   // appropriate.
   void AddShortcutUsingFavicon();
 
   // Callback run when a favicon is received from GetFavicon() call.
   void OnDidGetFavicon(
       const favicon_base::FaviconRawBitmapResult& bitmap_result);
 
   // WebContentsObserver
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void WebContentsDestroyed() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void WebContentsDestroyed() override;
 
   // Adds a shortcut to the launcher using a FaviconRawBitmapResult.
   // Must be called from a WorkerPool task.
   static void AddShortcutInBackgroundWithRawBitmap(
       const ShortcutInfo& info,
       const favicon_base::FaviconRawBitmapResult& bitmap_result);
 
   // Adds a shortcut to the launcher using a SkBitmap.
   // Must be called from a WorkerPool task.
   static void AddShortcutInBackgroundWithSkBitmap(
       const ShortcutInfo& info,
       const SkBitmap& icon_bitmap);
 
   // Registers JNI hooks.
   static bool RegisterShortcutHelper(JNIEnv* env);
 
  private:
   enum ManifestIconStatus {
     MANIFEST_ICON_STATUS_NONE,
     MANIFEST_ICON_STATUS_FETCHING,
     MANIFEST_ICON_STATUS_DONE
   };
 
-  virtual ~ShortcutHelper();
+  ~ShortcutHelper() override;
 
   void Destroy();
 
   JavaObjectWeakGlobalRef java_ref_;
 
   ShortcutInfo shortcut_info_;
   SkBitmap manifest_icon_;
   base::CancelableTaskTracker cancelable_task_tracker_;
 
   bool add_shortcut_requested_;
 
   ManifestIconStatus manifest_icon_status_;
   const int preferred_icon_size_in_px_;
   static const int kPreferredIconSizeInDp;
 
   base::WeakPtrFactory<ShortcutHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_