content: Use base::MessageLoop.

content/ppapi_plugin/ppapi_plugin_main.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 "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/i18n/rtl.h"
 #include "base/message_loop.h"
 #include "base/threading/platform_thread.h"
 #include "build/build_config.h"
@@ skipping 61 matching lines @@
     // http://crbug.com/155671
     //
     // ICU can accept "en-US" or "en_US", but POSIX wants "en_US".
     std::replace(locale.begin(), locale.end(), '-', '_');
     locale.append(".UTF-8");
     setlocale(LC_ALL, locale.c_str());
     setenv("LANG", locale.c_str(), 0);
 #endif
   }
 
-  MessageLoop main_message_loop;
+  base::MessageLoop main_message_loop;
   base::PlatformThread::SetName("CrPPAPIMain");
 
 #if defined(OS_LINUX) && defined(USE_NSS)
   // Some out-of-process PPAPI plugins use NSS.
   // NSS must be initialized before enabling the sandbox below.
   crypto::InitNSSSafely();
 #endif
 
   // Allow the embedder to perform any necessary per-process initialization
   // before the sandbox is initialized.
   if (GetContentClient()->plugin())
     GetContentClient()->plugin()->PreSandboxInitialization();
 
 #if defined(OS_LINUX)
   LinuxSandbox::InitializeSandbox();
 #endif
 
   ChildProcess ppapi_process;
   ppapi_process.set_main_thread(
       new PpapiThread(parameters.command_line, false));  // Not a broker.
 
   main_message_loop.Run();
   return 0;
 }
 
 }  // namespace content