Mac Chromium style checker cleanup

chrome/browser/ui/cocoa/infobars/infobar_container_controller.mm

 // Copyright (c) 2011 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 "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "chrome/browser/api/infobars/confirm_infobar_delegate.h"
 #include "chrome/browser/api/infobars/infobar_service.h"
 #include "chrome/browser/infobars/infobar.h"
@@ skipping 10 matching lines @@
 // C++ class that receives INFOBAR_ADDED and INFOBAR_REMOVED
 // notifications and proxies them back to |controller|.
 class InfoBarNotificationObserver : public content::NotificationObserver {
  public:
   InfoBarNotificationObserver(InfoBarContainerController* controller)
       : controller_(controller) {
   }
 
  private:
   // NotificationObserver implementation
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) {
+  virtual void Observe(
+      int type,
+      const content::NotificationSource& source,
+      const content::NotificationDetails& details) OVERRIDE {
     InfoBarService* infobar_service =
         content::Source<InfoBarService>(source).ptr();
     switch (type) {
       case chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_ADDED:
         [controller_ addInfoBar:content::Details<InfoBarAddedDetails>(details)->
                                     CreateInfoBar(infobar_service)
                         animate:YES];
         break;
 
       case chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED: {
@@ skipping 224 matching lines @@
     frame.size.width = NSWidth(containerBounds);
     [view setFrame:frame];
 
     minY += NSHeight(frame) - infobars::kTipHeight;
   }
 
   [resizeDelegate_ resizeView:[self view] newHeight:[self desiredHeight]];
 }
 
 @end