Update refernces to Blink's Platform API (webkit)

webkit/glue/webdropdata.h

 // 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.
 //
 // A struct for managing data being dropped on a webview.  This represents a
 // union of all the types of data that can be dropped in a platform neutral
 // way.
 
 #ifndef WEBKIT_GLUE_WEBDROPDATA_H_
 #define WEBKIT_GLUE_WEBDROPDATA_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/nullable_string16.h"
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/WebReferrerPolicy.h"
+#include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
 #include "webkit/glue/webkit_glue_export.h"
 
 struct IDataObject;
 
 namespace WebKit {
 class WebDragData;
 }
 
 struct WEBKIT_GLUE_EXPORT WebDropData {
   // The struct is used to represent a file in the drop data.
@@ skipping 50 matching lines @@
   WebKit::WebDragData ToDragData() const;
 
   // Helper method for converting Window's specific IDataObject to a WebDropData
   // object.  TODO(tc): Move this to the browser side since it's Windows
   // specific and no longer used in webkit.
   static void PopulateWebDropData(IDataObject* data_object,
                                   WebDropData* drop_data);
 };
 
 #endif  // WEBKIT_GLUE_WEBDROPDATA_H_