Convert the PluginResource to be refcounted.

ppapi/proxy/ppb_buffer_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_buffer_proxy.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 98 matching lines @@
     return 0;
 
   return AddProxyResource(result, shm_handle, size);
 }
 
 // static
 PP_Resource PPB_Buffer_Proxy::AddProxyResource(
     const HostResource& resource,
     base::SharedMemoryHandle shm_handle,
     uint32_t size) {
-  linked_ptr<Buffer> object(new Buffer(resource, shm_handle, size));
-  return PluginResourceTracker::GetInstance()->AddResource(object);
+  return PluginResourceTracker::GetInstance()->AddResource(
+      new Buffer(resource, shm_handle, size));
 }
 
 bool PPB_Buffer_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Buffer_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBBuffer_Create, OnMsgCreate)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   // TODO(brettw) handle bad messages!
   return handled;
@@ skipping 31 matching lines @@
 #elif defined(OS_POSIX)
       local_fd;
 #else
   #error Not implemented.
 #endif
   *result_shm_handle = dispatcher->ShareHandleWithRemote(platform_file, false);
 }
 
 }  // namespace proxy
 }  // namespace pp