Cleanup namespace usage in Source/web/*.h

Source/web/BackForwardClientImpl.h

 /*
  * Copyright (C) 2009 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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef BackForwardClientImpl_h
 #define BackForwardClientImpl_h
 
 #include "core/page/BackForwardClient.h"
 
 namespace blink {
+
 class WebViewImpl;
 
-class BackForwardClientImpl FINAL : public blink::BackForwardClient {
+class BackForwardClientImpl FINAL : public BackForwardClient {
 public:
     explicit BackForwardClientImpl(WebViewImpl*);
     virtual ~BackForwardClientImpl();
 
 private:
-    // blink::BackForwardList methods:
+    // BackForwardList methods:
     virtual int backListCount() OVERRIDE;
     virtual int forwardListCount() OVERRIDE;
     virtual int backForwardListCount() OVERRIDE;
 
     WebViewImpl* m_webView;
 };
 
 } // namespace blink
 
 #endif