Move base to DEPS

base/synchronization/lock_impl.h

-// Copyright (c) 2011 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 BASE_SYNCHRONIZATION_LOCK_IMPL_H_
-#define BASE_SYNCHRONIZATION_LOCK_IMPL_H_
-
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#elif defined(OS_POSIX)
-#include <pthread.h>
-#endif
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-
-namespace base {
-namespace internal {
-
-// This class implements the underlying platform-specific spin-lock mechanism
-// used for the Lock class.  Most users should not use LockImpl directly, but
-// should instead use Lock.
-class BASE_EXPORT LockImpl {
- public:
-#if defined(OS_WIN)
-  typedef CRITICAL_SECTION NativeHandle;
-#elif defined(OS_POSIX)
-  typedef pthread_mutex_t NativeHandle;
-#endif
-
-  LockImpl();
-  ~LockImpl();
-
-  // If the lock is not held, take it and return true.  If the lock is already
-  // held by something else, immediately return false.
-  bool Try();
-
-  // Take the lock, blocking until it is available if necessary.
-  void Lock();
-
-  // Release the lock.  This must only be called by the lock's holder: after
-  // a successful call to Try, or a call to Lock.
-  void Unlock();
-
-  // Return the native underlying lock.
-  // TODO(awalker): refactor lock and condition variables so that this is
-  // unnecessary.
-  NativeHandle* native_handle() { return &native_handle_; }
-
- private:
-  NativeHandle native_handle_;
-
-  DISALLOW_COPY_AND_ASSIGN(LockImpl);
-};
-
-}  // namespace internal
-}  // namespace base
-
-#endif  // BASE_SYNCHRONIZATION_LOCK_IMPL_H_