Cleanup namespace usage from animation to exported in platform/

Source/platform/exported/WebPermissionCallbacks.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "public/platform/WebPermissionCallbacks.h"
 
 #include "platform/PermissionCallbacks.h"
 
-using namespace blink;
-
 namespace blink {
 
 class WebPermissionCallbacksPrivate : public RefCounted<WebPermissionCallbacksPrivate> {
 public:
     static PassRefPtr<WebPermissionCallbacksPrivate> create(const PassOwnPtr<PermissionCallbacks>& callbacks)
     {
         return adoptRef(new WebPermissionCallbacksPrivate(callbacks));
     }
 
     PermissionCallbacks* callbacks() { return m_callbacks.get(); }
@@ skipping 26 matching lines @@
 }
 
 void WebPermissionCallbacks::doDeny()
 {
     ASSERT(!m_private.isNull());
     m_private->callbacks()->onDenied();
     m_private.reset();
 }
 
 } // namespace blink