Convert the PluginResource to be refcounted.

ppapi/proxy/ppb_url_response_info_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppb_url_response_info_proxy.h"
 
 #include "ppapi/c/ppb_url_response_info.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
@@ skipping 85 matching lines @@
     INTERFACE_ID_PPB_URL_RESPONSE_INFO,
     false,
     &CreateURLResponseInfoProxy,
   };
   return &info;
 }
 
 // static
 PP_Resource PPB_URLResponseInfo_Proxy::CreateResponseForResource(
     const HostResource& resource) {
-  linked_ptr<URLResponseInfo> object(new URLResponseInfo(resource));
-  return PluginResourceTracker::GetInstance()->AddResource(object);
+  return PluginResourceTracker::GetInstance()->AddResource(
+      new URLResponseInfo(resource));
 }
 
 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)
@@ skipping 26 matching lines @@
   // Use the FileRef proxy to serialize.
   DCHECK(!dispatcher()->IsPlugin());
   HostDispatcher* host_disp = static_cast<HostDispatcher*>(dispatcher());
   PPB_FileRef_Proxy* file_ref_proxy = static_cast<PPB_FileRef_Proxy*>(
       host_disp->GetOrCreatePPBInterfaceProxy(INTERFACE_ID_PPB_FILE_REF));
   file_ref_proxy->SerializeFileRef(file_ref, result);
 }
 
 }  // namespace proxy
 }  // namespace pp