Mojo: Move mojo/public/utility to mojo/public/cpp/utility.

mojo/public/utility/lib/thread_local.h

-// Copyright 2014 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.
-
-#ifndef MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_
-#define MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_
-
-#ifndef _WIN32
-#include <pthread.h>
-#endif
-
-#include "mojo/public/cpp/system/macros.h"
-
-namespace mojo {
-namespace internal {
-
-// Helper functions that abstract the cross-platform APIs.
-struct ThreadLocalPlatform {
-#ifdef _WIN32
-  typedef unsigned long SlotType;
-#else
-  typedef pthread_key_t SlotType;
-#endif
-
-  static void AllocateSlot(SlotType* slot);
-  static void FreeSlot(SlotType slot);
-  static void* GetValueFromSlot(SlotType slot);
-  static void SetValueInSlot(SlotType slot, void* value);
-};
-
-// This class is intended to be statically allocated.
-template <typename P>
-class ThreadLocalPointer {
- public:
-  ThreadLocalPointer() : slot_() {
-  }
-
-  void Allocate() {
-    ThreadLocalPlatform::AllocateSlot(&slot_);
-  }
-
-  void Free() {
-    ThreadLocalPlatform::FreeSlot(slot_);
-  }
-
-  P* Get() {
-    return static_cast<P*>(ThreadLocalPlatform::GetValueFromSlot(slot_));
-  }
-
-  void Set(P* value) {
-    ThreadLocalPlatform::SetValueInSlot(slot_, value);
-  }
-
- private:
-  ThreadLocalPlatform::SlotType slot_;
-};
-
-}  // namespace internal
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_