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

ppapi/proxy/ppb_url_response_info_proxy.cc

 // Copyright (c) 2010 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.
 
 #include "ppapi/proxy/ppb_url_response_info_proxy.h"
 
 #include "ppapi/c/ppb_url_response_info.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
 
 namespace pp {
 namespace proxy {
 
 class URLResponseInfo : public PluginResource {
  public:
-  URLResponseInfo(PP_Instance instance) : PluginResource(instance) {}
+  URLResponseInfo(PP_Instance instance, SerializedResource resource)
+      : PluginResource(instance, resource) {
+  }
   virtual ~URLResponseInfo() {}
 
   // Resource overrides.
   virtual URLResponseInfo* AsURLResponseInfo() { return this; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(URLResponseInfo);
 };
 
 namespace {
 
 PP_Bool IsURLResponseInfo(PP_Resource resource) {
   URLResponseInfo* object = PluginResource::GetAs<URLResponseInfo>(resource);
   return BoolToPPBool(!!object);
 }
 
 PP_Var GetProperty(PP_Resource response, PP_URLResponseProperty property) {
   URLResponseInfo* object = PluginResource::GetAs<URLResponseInfo>(response);
   if (!object)
     return PP_MakeUndefined();
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(
       object->instance());
   if (!dispatcher)
     return PP_MakeUndefined();
 
   ReceiveSerializedVarReturnValue result;
   dispatcher->Send(new PpapiHostMsg_PPBURLResponseInfo_GetProperty(
-      INTERFACE_ID_PPB_URL_RESPONSE_INFO, response, property, &result));
+      INTERFACE_ID_PPB_URL_RESPONSE_INFO, object->host_resource(), property,
+      &result));
   return result.Return(dispatcher);
 }
 
 PP_Resource GetBodyAsFileRef(PP_Resource response) {
-  PP_Resource result = 0;
   /*
   dispatcher->Send(new PpapiHostMsg_PPBURLResponseInfo_GetBodyAsFileRef(
       INTERFACE_ID_PPB_URL_RESPONSE_INFO, response, &result));
   // TODO(brettw) when we have FileRef proxied, make an object from that
   // ref so we can track it properly and then uncomment this.
   */
-  return result;
+  return 0;
 }
 
 const PPB_URLResponseInfo ppb_urlresponseinfo = {
   &IsURLResponseInfo,
   &GetProperty,
   &GetBodyAsFileRef
 };
 
 }  // namespace
 
 PPB_URLResponseInfo_Proxy::PPB_URLResponseInfo_Proxy(
     Dispatcher* dispatcher,
     const void* target_interface)
     : InterfaceProxy(dispatcher, target_interface) {
 }
 
 PPB_URLResponseInfo_Proxy::~PPB_URLResponseInfo_Proxy() {
 }
 
 // static
-void PPB_URLResponseInfo_Proxy::TrackPluginResource(
+PP_Resource PPB_URLResponseInfo_Proxy::CreateResponseForResource(
     PP_Instance instance,
-    PP_Resource response_resource) {
-  linked_ptr<URLResponseInfo> object(new URLResponseInfo(instance));
-  PluginResourceTracker::GetInstance()->AddResource(
-      response_resource, object);
+    SerializedResource resource) {
+  linked_ptr<URLResponseInfo> object(new URLResponseInfo(instance, resource));
+  return PluginResourceTracker::GetInstance()->AddResource(object);
 }
 
 const void* PPB_URLResponseInfo_Proxy::GetSourceInterface() const {
   return &ppb_urlresponseinfo;
 }
 
 InterfaceID PPB_URLResponseInfo_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_URL_RESPONSE_INFO;
 }
 
 bool PPB_URLResponseInfo_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_URLResponseInfo_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBURLResponseInfo_GetProperty,
                         OnMsgGetProperty)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBURLResponseInfo_GetBodyAsFileRef,
                         OnMsgGetBodyAsFileRef)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   // TODO(brettw): handle bad messages.
   return handled;
 }
 
 void PPB_URLResponseInfo_Proxy::OnMsgGetProperty(
-    PP_Resource response,
+    SerializedResource response,
     int32_t property,
     SerializedVarReturnValue result) {
   result.Return(dispatcher(), ppb_url_response_info_target()->GetProperty(
-      response, static_cast<PP_URLResponseProperty>(property)));
+      response.host_resource(), static_cast<PP_URLResponseProperty>(property)));
 }
 
 void PPB_URLResponseInfo_Proxy::OnMsgGetBodyAsFileRef(
-    PP_Resource response,
-    PP_Resource* file_ref_result) {
-  *file_ref_result = ppb_url_response_info_target()->GetBodyAsFileRef(response);
+    SerializedResource response,
+    SerializedResource* file_ref_result) {
+  file_ref_result->set_host_resource(
+      ppb_url_response_info_target()->GetBodyAsFileRef(
+          response.host_resource()));
 }
 
 }  // namespace proxy
 }  // namespace pp