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

base/lazy_instance.cc

-// 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.
 
 #include "base/lazy_instance.h"
 
 #include "base/at_exit.h"
 #include "base/atomicops.h"
 #include "base/basictypes.h"
-#include "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 
 namespace base {
 
 bool LazyInstanceHelper::NeedsInstance() {
   // Try to create the instance, if we're the first, will go from EMPTY
   // to CREATING, otherwise we've already been beaten here.
   if (base::subtle::Acquire_CompareAndSwap(
           &state_, STATE_EMPTY, STATE_CREATING) == STATE_EMPTY) {
     // Caller must create instance
@@ skipping 14 matching lines @@
 
   // Instance is created, go from CREATING to CREATED.
   base::subtle::Release_Store(&state_, STATE_CREATED);
 
   // Make sure that the lazily instantiated object will get destroyed at exit.
   if (dtor)
     base::AtExitManager::RegisterCallback(dtor, instance);
 }
 
 }  // namespace base