content: Use base::MessageLoop.

content/ppapi_plugin/plugin_process_dispatcher.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 "content/ppapi_plugin/plugin_process_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "content/common/child_process.h"
 
@@ skipping 14 matching lines @@
                                      incognito) {
   ChildProcess::current()->AddRefProcess();
 }
 
 PluginProcessDispatcher::~PluginProcessDispatcher() {
   // Don't free the process right away. This timer allows the child process
   // to be re-used if the user rapidly goes to a new page that requires this
   // plugin. This is the case for common plugins where they may be used on a
   // source and destination page of a navigation. We don't want to tear down
   // and re-start processes each time in these cases.
-  MessageLoop::current()->PostDelayedTask(
+  base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ChildProcess::ReleaseProcess,
                  base::Unretained(ChildProcess::current())),
       base::TimeDelta::FromSeconds(kPluginReleaseTimeSeconds));
 }
 
 }  // namespace content