Update refernces to Blink's Platform API (webkit)

webkit/plugins/ppapi/mock_plugin_delegate.cc

 // Copyright (c) 2012 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 "webkit/plugins/ppapi/mock_plugin_delegate.h"
 
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/shared_impl/ppapi_preferences.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebGamepads.h"
+#include "third_party/WebKit/public/platform/WebGamepads.h"
 #include "webkit/plugins/ppapi/mock_platform_image_2d.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 namespace webkit {
 namespace ppapi {
 
 MockPluginDelegate::MockPluginDelegate() {
 }
 
@@ skipping 391 matching lines @@
   return false;
 }
 
 void MockPluginDelegate::HandleDocumentLoad(
     PluginInstance* instance,
     const WebKit::WebURLResponse& response) {
 }
 
 }  // namespace ppapi
 }  // namespace webkit