Cleanup namespace usage from animation to exported in platform/

Source/platform/exported/WebURLRequestPrivate.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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 WebURLRequestPrivate_h
 #define WebURLRequestPrivate_h
 
-namespace blink { class ResourceRequest; }
+namespace blink {
 
-namespace blink {
+class ResourceRequest;
 
 class WebURLRequestPrivate {
 public:
     WebURLRequestPrivate()
         : m_resourceRequest(0)
     {
     }
 
     // Called by WebURLRequest when it no longer needs this object.
     virtual void dispose() = 0;
 
-    blink::ResourceRequest* m_resourceRequest;
+    ResourceRequest* m_resourceRequest;
 };
 
 } // namespace blink
 
 #endif