Add OVERRIDE to content/.

content/browser/accessibility/browser_accessibility_manager_mac.h

Index: content/browser/accessibility/browser_accessibility_manager_mac.h
diff --git a/content/browser/accessibility/browser_accessibility_manager_mac.h b/content/browser/accessibility/browser_accessibility_manager_mac.h
index c7c5089b67c76651ba20e1ef5f11b0123ebc279d..e5ec5f30b3877d4128c087041b6c8484818acd14 100644
--- a/content/browser/accessibility/browser_accessibility_manager_mac.h
+++ b/content/browser/accessibility/browser_accessibility_manager_mac.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -13,7 +13,8 @@
 class BrowserAccessibilityManagerMac : public BrowserAccessibilityManager {
  public:
   // Implementation of BrowserAccessibilityManager.
-  virtual void NotifyAccessibilityEvent(int type, BrowserAccessibility* node);
+  virtual void NotifyAccessibilityEvent(int type,
+                                        BrowserAccessibility* node) OVERRIDE;
 
  private:
   // This gives BrowserAccessibilityManager::Create access to the class