Move platform_thread to base/threading and put in the base namespace. I left ...

chrome/gpu/gpu_main.cc

 // Copyright (c) 2010 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 <stdlib.h>
 
 #include "app/app_switches.h"
 #include "app/gfx/gl/gl_context.h"
 #include "app/gfx/gl/gl_implementation.h"
 #include "base/environment.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
+#include "base/threading/platform_thread.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/common/main_function_params.h"
 #include "chrome/gpu/gpu_config.h"
 #include "chrome/gpu/gpu_process.h"
 #include "chrome/gpu/gpu_thread.h"
 #include "chrome/gpu/gpu_watchdog_thread.h"
 
@@ skipping 44 matching lines @@
   const CommandLine& command_line = parameters.command_line_;
   if (command_line.HasSwitch(switches::kGpuStartupDialog)) {
     ChildProcess::WaitForDebugger(L"Gpu");
   }
 
 #if defined(OS_MACOSX)
   chrome_application_mac::RegisterCrApp();
 #endif
 
   MessageLoop main_message_loop(MessageLoop::TYPE_UI);
-  PlatformThread::SetName("CrGpuMain");
+  base::PlatformThread::SetName("CrGpuMain");
 
 #if defined(OS_WIN)
   win_util::ScopedCOMInitializer com_initializer;
 #endif
 
 #if defined(USE_X11)
   // The X11 port of the command buffer code assumes it can access the X
   // display via the macro GDK_DISPLAY(), which implies that Gtk has been
   // initialized. This code was taken from PluginThread. TODO(kbr):
   // rethink whether initializing Gtk is really necessary or whether we
@@ skipping 61 matching lines @@
     watchdog_thread->Start();
   }
 
   main_message_loop.Run();
 
   if (enable_watchdog)
     watchdog_thread->Stop();
 
   return 0;
 }