Cleanup namespace usage in public/web/Web[A-M]*.h.

public/web/WebMIDIClientMock.h

 /*
  * Copyright (C) 2013 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 18 matching lines @@
  */
 
 #ifndef WebMIDIClientMock_h
 #define WebMIDIClientMock_h
 
 #include "../platform/WebCommon.h"
 #include "../platform/WebPrivateOwnPtr.h"
 #include "WebMIDIClient.h"
 
 namespace blink {
+
 class MIDIClientMock;
-}
-
-namespace blink {
 
 class WebMIDIClientMock : public WebMIDIClient {
 public:
     BLINK_EXPORT WebMIDIClientMock();
     virtual ~WebMIDIClientMock() { reset(); }
 
     BLINK_EXPORT void setSysexPermission(bool);
     BLINK_EXPORT void resetMock();
 
     // WebMIDIClient
     virtual void requestSysexPermission(const WebMIDIPermissionRequest&) OVERRIDE;
     virtual void cancelSysexPermissionRequest(const WebMIDIPermissionRequest&) OVERRIDE;
 
 private:
     BLINK_EXPORT void reset();
 
-    WebPrivateOwnPtr<blink::MIDIClientMock> m_clientMock;
+    WebPrivateOwnPtr<MIDIClientMock> m_clientMock;
 };
 
 } // namespace blink
 
 #endif // WebMIDIClientMock_h