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

base/threading/platform_thread_win.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 "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 
 #include "base/logging.h"
 #include "base/thread_restrictions.h"
 #include "base/win/windows_version.h"
 
+namespace base {
+
 namespace {
 
 // The information on how to set the thread name comes from
 // a MSDN article: http://msdn2.microsoft.com/en-us/library/xcb2z8hs.aspx
 const DWORD kVCThreadNameException = 0x406D1388;
 
 typedef struct tagTHREADNAME_INFO {
   DWORD dwType;  // Must be 0x1000.
   LPCSTR szName;  // Pointer to name (in user addr space).
   DWORD dwThreadID;  // Thread ID (-1=caller thread).
@@ skipping 113 matching lines @@
   base::ThreadRestrictions::AssertIOAllowed();
 #endif
 
   // Wait for the thread to exit.  It should already have terminated but make
   // sure this assumption is valid.
   DWORD result = WaitForSingleObject(thread_handle, INFINITE);
   DCHECK_EQ(WAIT_OBJECT_0, result);
 
   CloseHandle(thread_handle);
 }
+
+}  // namespace base