Mojo: Refactor URLLoader interface.

mojo/services/network/url_loader_impl.h

 // 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.
 
 #ifndef MOJO_SERVICES_NETWORK_URL_LOADER_IMPL_H_
 #define MOJO_SERVICES_NETWORK_URL_LOADER_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 15 matching lines @@
  private:
   class PendingWriteToDataPipe;
   class DependentIOBuffer;
 
   // InterfaceImpl<> methods:
   virtual void OnConnectionError() OVERRIDE;
 
   // URLLoader methods:
   virtual void Start(
       URLRequestPtr request,
-      ScopedDataPipeProducerHandle response_body_stream) OVERRIDE;
-  virtual void FollowRedirect() OVERRIDE;
+      const Callback<void(URLResponsePtr)>& callback) OVERRIDE;
+  virtual void FollowRedirect(
+      const Callback<void(URLResponsePtr)>& callback) OVERRIDE;
+  virtual void QueryStatus(
+      const Callback<void(URLLoaderStatusPtr)>& callback) OVERRIDE;
 
   // net::URLRequest::Delegate methods:
   virtual void OnReceivedRedirect(net::URLRequest* url_request,
                                   const GURL& new_url,
                                   bool* defer_redirect) OVERRIDE;
   virtual void OnResponseStarted(net::URLRequest* url_request) OVERRIDE;
   virtual void OnReadCompleted(net::URLRequest* url_request, int bytes_read)
       OVERRIDE;
 
-  void SendError(int error);
+  void SendError(
+      int error,
+      const Callback<void(URLResponsePtr)>& callback);
+  void SendResponse(URLResponsePtr response);
   void OnResponseBodyStreamReady(MojoResult result);
   void WaitToReadMore();
   void ReadMore();
   void DidRead(uint32_t num_bytes, bool completed_synchronously);
 
   NetworkContext* context_;
   scoped_ptr<net::URLRequest> url_request_;
+  Callback<void(URLResponsePtr)> callback_;
   ScopedDataPipeProducerHandle response_body_stream_;
   scoped_refptr<PendingWriteToDataPipe> pending_write_;
   common::HandleWatcher handle_watcher_;
+  uint32 response_body_buffer_size_;
   bool auto_follow_redirects_;
 
   base::WeakPtrFactory<URLLoaderImpl> weak_ptr_factory_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NETWORK_URL_LOADER_IMPL_H_