Mojo: re-org public/utility and public/environment

mojo/public/utility/lib/thread_local_posix.cc

 // Copyright 2013 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 "mojo/public/utility/thread_local.h"
+#include "mojo/public/utility/lib/thread_local.h"
 
 #include <assert.h>
-#include <pthread.h>
 
 namespace mojo {
 namespace internal {
 
 // static
 void ThreadLocalPlatform::AllocateSlot(SlotType* slot) {
   if (pthread_key_create(slot, NULL) != 0) {
     assert(false);
   }
 }
@@ skipping 12 matching lines @@
 
 // static
 void ThreadLocalPlatform::SetValueInSlot(SlotType slot, void* value) {
   if (pthread_setspecific(slot, value) != 0) {
     assert(false);
   }
 }
 
 }  // namespace internal
 }  // namespace mojo