Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/user_image_loader.h

Index: chrome/browser/chromeos/login/user_image_loader.h
diff --git a/chrome/browser/chromeos/login/user_image_loader.h b/chrome/browser/chromeos/login/user_image_loader.h
index a3212ac5294db25bf698ef73e6f317ae48b2da3e..ed8d88979820261adeff4dee76016ab23f134a2e 100644
--- a/chrome/browser/chromeos/login/user_image_loader.h
+++ b/chrome/browser/chromeos/login/user_image_loader.h
@@ -10,6 +10,7 @@
 #include <string>
 
 #include "base/callback.h"
+#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/image_decoder.h"
 
@@ -56,8 +57,8 @@ class UserImageLoader : public base::RefCountedThreadSafe<UserImageLoader>,
 
   // ImageDecoder::Delegate implementation.
   virtual void OnImageDecoded(const ImageDecoder* decoder,
-                              const SkBitmap& decoded_image);
-  virtual void OnDecodeImageFailed(const ImageDecoder* decoder);
+                              const SkBitmap& decoded_image) OVERRIDE;
+  virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
 
   // The message loop object of the thread in which we notify the delegate.
   MessageLoop* target_message_loop_;