Update web classes to use OVERRIDE / FINAL when needed

Source/web/UserMediaClientImpl.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 
 namespace WebCore {
 class UserMediaRequest;
 }
 
 namespace blink {
 
 class WebUserMediaClient;
 class WebViewImpl;
 
-class UserMediaClientImpl : public WebCore::UserMediaClient {
+class UserMediaClientImpl FINAL : public WebCore::UserMediaClient {
 public:
     UserMediaClientImpl(WebViewImpl*);
 
     // WebCore::UserMediaClient ----------------------------------------------
-    virtual void requestUserMedia(PassRefPtr<WebCore::UserMediaRequest>);
-    virtual void cancelUserMediaRequest(WebCore::UserMediaRequest*);
+    virtual void requestUserMedia(PassRefPtr<WebCore::UserMediaRequest>) OVERRIDE;
+    virtual void cancelUserMediaRequest(WebCore::UserMediaRequest*) OVERRIDE;
 
 private:
     UserMediaClientImpl();
 
     WebUserMediaClient* m_client;
 };
 
 } // namespace blink
 
 #endif // UserMediaClientImpl_h