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

base/message_pump_glib.cc

Index: base/message_pump_glib.cc
===================================================================
--- base/message_pump_glib.cc	(revision 70328)
+++ base/message_pump_glib.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -12,7 +12,7 @@
 
 #include "base/eintr_wrapper.h"
 #include "base/logging.h"
-#include "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 
 namespace {
 
@@ -177,8 +177,8 @@
 #ifndef NDEBUG
   // Make sure we only run this on one thread.  GTK only has one message pump
   // so we can only have one UI loop per process.
-  static PlatformThreadId thread_id = PlatformThread::CurrentId();
-  DCHECK(thread_id == PlatformThread::CurrentId()) <<
+  static base::PlatformThreadId thread_id = base::PlatformThread::CurrentId();
+  DCHECK(thread_id == base::PlatformThread::CurrentId()) <<
       "Running MessagePumpForUI on two different threads; "
       "this is unsupported by GLib!";
 #endif