Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/cocoa/extensions/browser_action_button.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/extensions/browser_action_button.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/logging.h"
@@ skipping 31 matching lines @@
     : public ExtensionActionIconFactory::Observer {
  public:
   ExtensionActionIconFactoryBridge(BrowserActionButton* owner,
                                    Profile* profile,
                                    const Extension* extension)
       : owner_(owner),
         browser_action_([[owner cell] extensionAction]),
         icon_factory_(profile, extension, browser_action_, this) {
   }
 
-  virtual ~ExtensionActionIconFactoryBridge() {}
+  ~ExtensionActionIconFactoryBridge() override {}
 
   // ExtensionActionIconFactory::Observer implementation.
-  virtual void OnIconUpdated() override {
-    [owner_ updateState];
-  }
+  void OnIconUpdated() override { [owner_ updateState]; }
 
   gfx::Image GetIcon(int tabId) {
     return icon_factory_.GetIcon(tabId);
   }
 
  private:
   // Weak. Owns us.
   BrowserActionButton* owner_;
 
   // The browser action whose images we're loading.
@@ skipping 263 matching lines @@
                operation:NSCompositeSourceOver
                 fraction:enabled ? 1.0 : 0.4
           respectFlipped:YES
                    hints:nil];
 
   cellFrame.origin.y += kBrowserActionBadgeOriginYOffset;
   [self drawBadgeWithinFrame:cellFrame];
 }
 
 @end