Move some webkit_glue embedder functions into WebKitPlatformSupport virtual methods

webkit/glue/weburlloader_impl.h

 // Copyright (c) 2011 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.
 
 #ifndef WEBKIT_GLUE_WEBURLLOADER_IMPL_H_
 #define WEBKIT_GLUE_WEBURLLOADER_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLLoader.h"
 
 namespace webkit_glue {
 
+class WebKitPlatformSupportImpl;
+
 class WebURLLoaderImpl : public WebKit::WebURLLoader {
  public:
-  WebURLLoaderImpl();
+  explicit WebURLLoaderImpl(WebKitPlatformSupportImpl* platform);
   virtual ~WebURLLoaderImpl();
 
   // WebURLLoader methods:
   virtual void loadSynchronously(
       const WebKit::WebURLRequest& request,
       WebKit::WebURLResponse& response,
       WebKit::WebURLError& error,
       WebKit::WebData& data);
   virtual void loadAsynchronously(
       const WebKit::WebURLRequest& request,
       WebKit::WebURLLoaderClient* client);
   virtual void cancel();
   virtual void setDefersLoading(bool value);
 
   void UpdateRoutingId(int new_routing_id);
 
  private:
   class Context;
   scoped_refptr<Context> context_;
+  WebKitPlatformSupportImpl* platform_;
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_WEBURLLOADER_IMPL_H_