Refactor PPAPI proxy resource handling to maintain which host they came from,...

ppapi/proxy/ppb_url_response_info_proxy.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 PPAPI_PROXY_PPB_URL_RESPONSE_INFO_PROXY_H_
 #define PPAPI_PROXY_PPB_URL_RESPONSE_INFO_PROXY_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_resource.h"
+#include "ppapi/proxy/host_resource.h"
 #include "ppapi/proxy/interface_proxy.h"
 
 struct PPB_URLResponseInfo;
 
 namespace pp {
 namespace proxy {
 
 class SerializedVarReturnValue;
 
 class PPB_URLResponseInfo_Proxy : public InterfaceProxy {
  public:
   PPB_URLResponseInfo_Proxy(Dispatcher* dispatcher,
                             const void* target_interface);
   virtual ~PPB_URLResponseInfo_Proxy();
 
-  // URLResponseInfo objects are actually returned by the URLLoader class.
-  // This function allows the URLLoader proxy to start the tracking of
-  // a response info object in the plugin.
-  static void TrackPluginResource(PP_Instance instance,
-                                  PP_Resource response_resource);
+  // URLResponseInfo objects are actually created and returned by the
+  // URLLoader. This function allows the URLLoader to convert a new
+  // HostResource representing a response info to a properly tracked
+  // URLReponseInfo PluginResource. Returns the plugin resource ID for the
+  // new resource.
+  static PP_Resource CreateResponseForResource(const HostResource& resource);
 
   const PPB_URLResponseInfo* ppb_url_response_info_target() const {
     return static_cast<const PPB_URLResponseInfo*>(target_interface());
   }
 
   // InterfaceProxy implementation.
   virtual const void* GetSourceInterface() const;
   virtual InterfaceID GetInterfaceId() const;
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
  private:
   // Message handlers.
-  void OnMsgGetProperty(PP_Resource response,
+  void OnMsgGetProperty(HostResource response,
                         int32_t property,
                         SerializedVarReturnValue result);
-  void OnMsgGetBodyAsFileRef(PP_Resource response,
-                             PP_Resource* file_ref_result);
+  void OnMsgGetBodyAsFileRef(HostResource response,
+                             HostResource* file_ref_result);
 
   DISALLOW_COPY_AND_ASSIGN(PPB_URLResponseInfo_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PROXY_PPB_URL_RESPONSE_INFO_PROXY_H_