Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

ppapi/proxy/ppapi_proxy_test.cc

 // Copyright (c) 2012 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/ppapi_proxy_test.h"
 
 #include <sstream>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 533 matching lines @@
   plugin_thread_.message_loop_proxy()->PostTask(
       FROM_HERE,
       base::Bind(&SetUpRemoteHarness,
                  remote_harness_,
                  handle,
                  io_thread_.message_loop_proxy(),
                  &shutdown_event_,
                  &remote_harness_set_up));
   remote_harness_set_up.Wait();
   local_harness_->SetUpHarnessWithChannel(handle,
-                                          io_thread_.message_loop_proxy(),
+                                          io_thread_.message_loop_proxy().get(),
                                           &shutdown_event_,
                                           true);  // is_client
 }
 
 void TwoWayTest::TearDown() {
   base::WaitableEvent remote_harness_torn_down(true, false);
   plugin_thread_.message_loop_proxy()->PostTask(
       FROM_HERE,
       base::Bind(&TearDownRemoteHarness,
                  remote_harness_,
@@ skipping 10 matching lines @@
   plugin_thread_.message_loop_proxy()->PostTask(FROM_HERE,
       base::Bind(&RunTaskOnRemoteHarness,
                  task,
                  &task_complete));
   task_complete.Wait();
 }
 
 
 }  // namespace proxy
 }  // namespace ppapi