Move base to DEPS

base/ios/scoped_critical_action.mm

-// 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/ios/scoped_critical_action.h"
-
-#import <UIKit/UIKit.h>
-
-#include "base/logging.h"
-#include "base/memory/ref_counted.h"
-#include "base/synchronization/lock.h"
-
-namespace base {
-namespace ios {
-
-ScopedCriticalAction::ScopedCriticalAction()
-    : core_(new ScopedCriticalAction::Core()) {
-}
-
-ScopedCriticalAction::~ScopedCriticalAction() {
-  core_->EndBackgroundTask();
-}
-
-// This implementation calls |beginBackgroundTaskWithExpirationHandler:| when
-// instantiated and |endBackgroundTask:| when destroyed, creating a scope whose
-// execution will continue (temporarily) even after the app is backgrounded.
-ScopedCriticalAction::Core::Core() {
-  scoped_refptr<ScopedCriticalAction::Core> core = this;
-  background_task_id_ = [[UIApplication sharedApplication]
-      beginBackgroundTaskWithExpirationHandler:^{
-        DLOG(WARNING) << "Background task with id " << background_task_id_
-                      << " expired.";
-        // Note if |endBackgroundTask:| is not called for each task before time
-        // expires, the system kills the application.
-        core->EndBackgroundTask();
-      }];
-  if (background_task_id_ == UIBackgroundTaskInvalid) {
-    DLOG(WARNING) <<
-        "beginBackgroundTaskWithExpirationHandler: returned an invalid ID";
-  } else {
-    VLOG(3) << "Beginning background task with id " << background_task_id_;
-  }
-}
-
-ScopedCriticalAction::Core::~Core() {
-  DCHECK_EQ(background_task_id_, UIBackgroundTaskInvalid);
-}
-
-void ScopedCriticalAction::Core::EndBackgroundTask() {
-  UIBackgroundTaskIdentifier task_id;
-  {
-    AutoLock lock_scope(background_task_id_lock_);
-    if (background_task_id_ == UIBackgroundTaskInvalid)
-      return;
-    task_id = background_task_id_;
-    background_task_id_ = UIBackgroundTaskInvalid;
-  }
-
-  VLOG(3) << "Ending background task with id " << task_id;
-  [[UIApplication sharedApplication] endBackgroundTask:task_id];
-}
-
-}  // namespace ios
-}  // namespace base