Move base to DEPS

base/sequence_checker_impl.cc

-// Copyright (c) 2012 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/sequence_checker_impl.h"
-
-namespace base {
-
-SequenceCheckerImpl::SequenceCheckerImpl()
-    : sequence_token_assigned_(false) {
-  AutoLock auto_lock(lock_);
-  EnsureSequenceTokenAssigned();
-}
-
-SequenceCheckerImpl::~SequenceCheckerImpl() {}
-
-bool SequenceCheckerImpl::CalledOnValidSequencedThread() const {
-  AutoLock auto_lock(lock_);
-  EnsureSequenceTokenAssigned();
-
-  // If this thread is not associated with a SequencedWorkerPool,
-  // SequenceChecker behaves as a ThreadChecker. See header for details.
-  if (!sequence_token_.IsValid())
-    return thread_checker_.CalledOnValidThread();
-
-  return sequence_token_.Equals(
-      SequencedWorkerPool::GetSequenceTokenForCurrentThread());
-}
-
-void SequenceCheckerImpl::DetachFromSequence() {
-  AutoLock auto_lock(lock_);
-  thread_checker_.DetachFromThread();
-  sequence_token_assigned_ = false;
-  sequence_token_ = SequencedWorkerPool::SequenceToken();
-}
-
-void SequenceCheckerImpl::EnsureSequenceTokenAssigned() const {
-  lock_.AssertAcquired();
-  if (sequence_token_assigned_)
-    return;
-
-  sequence_token_assigned_ = true;
-  sequence_token_ = SequencedWorkerPool::GetSequenceTokenForCurrentThread();
-}
-
-}  // namespace base