Replacing the OVERRIDE with override in chrome/renderer

chrome/renderer/prefetch_helper.h

Index: chrome/renderer/prefetch_helper.h
diff --git a/chrome/renderer/prefetch_helper.h b/chrome/renderer/prefetch_helper.h
index 2c74e010b39c00aa1e903c60bd23de5cf4e53d28..a155a8519c4e5ed23734fb69aef6c5ce27de411e 100644
--- a/chrome/renderer/prefetch_helper.h
+++ b/chrome/renderer/prefetch_helper.h
@@ -24,13 +24,13 @@ class PrefetchHelper : public content::RenderFrameObserver,
   // blink::WebURLLoaderClient implementation
   virtual void didFinishLoading(blink::WebURLLoader* loader,
                                 double finishTime,
-                                int64_t totalEncodedDataLength) OVERRIDE;
+                                int64_t totalEncodedDataLength) override;
   virtual void didFail(blink::WebURLLoader* loader,
-                       const blink::WebURLError& error) OVERRIDE;
+                       const blink::WebURLError& error) override;
 
  private:
   // RenderViewObserver implementation
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) override;
 
   void OnPrefetch(const GURL& url);