Convert the PluginResource to be refcounted.

ppapi/proxy/ppb_url_request_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_request_info_proxy.h"
 
 #include "ppapi/c/ppb_url_request_info.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource.h"
@@ skipping 121 matching lines @@
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
   if (!dispatcher)
     return 0;
 
   HostResource result;
   dispatcher->Send(new PpapiHostMsg_PPBURLRequestInfo_Create(
       INTERFACE_ID_PPB_URL_REQUEST_INFO, instance, &result));
   if (result.is_null())
     return 0;
 
-  linked_ptr<URLRequestInfo> object(new URLRequestInfo(result));
-  return PluginResourceTracker::GetInstance()->AddResource(object);
+  return PluginResourceTracker::GetInstance()->AddResource(
+      new URLRequestInfo(result));
 }
 
 bool PPB_URLRequestInfo_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_URLRequestInfo_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBURLRequestInfo_Create, OnMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBURLRequestInfo_SetProperty,
                         OnMsgSetProperty)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBURLRequestInfo_AppendDataToBody,
                         OnMsgAppendDataToBody)
@@ skipping 43 matching lines @@
   EnterHostFromHostResource<PPB_URLRequestInfo_API> enter(request);
   if (enter.succeeded()) {
     enter.object()->AppendFileToBody(
         file_ref.host_resource(), start_offset, number_of_bytes,
         expected_last_modified_time);
   }
 }
 
 }  // namespace proxy
 }  // namespace pp