Convert URLLoader to the new proxy design

ppapi/proxy/ppb_url_loader_proxy.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.
-
-#ifndef PPAPI_PPB_URL_LOADER_PROXY_H_
-#define PPAPI_PPB_URL_LOADER_PROXY_H_
-
-#include "ppapi/c/pp_completion_callback.h"
-#include "ppapi/c/pp_instance.h"
-#include "ppapi/c/pp_module.h"
-#include "ppapi/c/pp_resource.h"
-#include "ppapi/c/pp_size.h"
-#include "ppapi/c/pp_var.h"
-#include "ppapi/c/ppb_url_loader.h"
-#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
-#include "ppapi/proxy/interface_proxy.h"
-#include "ppapi/proxy/proxy_completion_callback_factory.h"
-#include "ppapi/shared_impl/host_resource.h"
-#include "ppapi/utility/completion_callback_factory.h"
-
-namespace ppapi {
-
-struct URLRequestInfoData;
-struct URLResponseInfoData;
-
-namespace proxy {
-
-struct PPBURLLoader_UpdateProgress_Params;
-
-class PPB_URLLoader_Proxy : public InterfaceProxy {
- public:
-  PPB_URLLoader_Proxy(Dispatcher* dispatcher);
-  virtual ~PPB_URLLoader_Proxy();
-
-  static const Info* GetTrustedInfo();
-
-  static PP_Resource CreateProxyResource(PP_Instance instance);
-
-  // URLLoader objects are normally allocated by the Create function, but
-  // they are also provided to PPP_Instance.OnMsgHandleDocumentLoad. This
-  // function allows the proxy for DocumentLoad to create the correct plugin
-  // proxied info for the given browser-supplied URLLoader resource ID.
-  static PP_Resource TrackPluginResource(
-      const HostResource& url_loader_resource);
-
-  // InterfaceProxy implementation.
-  virtual bool OnMessageReceived(const IPC::Message& msg);
-
-  // URLLoader objects are sent from places other than just URLLoader.Create,
-  // in particular when doing a full-frame plugin. This function does the
-  // necessary setup in the host before the resource is sent. Call this any
-  // time you're sending a new URLLoader that the plugin hasn't seen yet.
-  void PrepareURLLoaderForSendingToPlugin(PP_Resource resource);
-
-  static const ApiID kApiID = API_ID_PPB_URL_LOADER;
-
- private:
-  // Plugin->renderer message handlers.
-  void OnMsgCreate(PP_Instance instance,
-                   HostResource* result);
-  void OnMsgOpen(const HostResource& loader,
-                 const URLRequestInfoData& data);
-  void OnMsgFollowRedirect(const HostResource& loader);
-  void OnMsgGetResponseInfo(const HostResource& loader,
-                            bool* success,
-                            URLResponseInfoData* result);
-  void OnMsgReadResponseBody(const HostResource& loader,
-                             int32_t bytes_to_read);
-  void OnMsgFinishStreamingToFile(const HostResource& loader);
-  void OnMsgClose(const HostResource& loader);
-  void OnMsgGrantUniversalAccess(const HostResource& loader);
-
-  // Renderer->plugin message handlers.
-  void OnMsgUpdateProgress(
-      const PPBURLLoader_UpdateProgress_Params& params);
-  void OnMsgReadResponseBodyAck(const IPC::Message& message);
-  void OnMsgCallbackComplete(const HostResource& host_resource, int32_t result);
-
-  // Handles callbacks for read complete messages. Takes ownership of the
-  // message pointer.
-  void OnReadCallback(int32_t result, IPC::Message* message);
-
-  // Handles callback for everything but reads.
-  void OnCallback(int32_t result, const HostResource& resource);
-
-  ProxyCompletionCallbackFactory<PPB_URLLoader_Proxy> callback_factory_;
-};
-
-}  // namespace proxy
-}  // namespace ppapi
-
-#endif  // PPAPI_PPB_URL_LOADER_PROXY_H_