Move base to DEPS

base/task_runner.h

Index: base/task_runner.h
diff --git a/base/task_runner.h b/base/task_runner.h
deleted file mode 100644
index 6369c4f65fa196cd6375981c507751776d48935a..0000000000000000000000000000000000000000
--- a/base/task_runner.h
+++ /dev/null
@@ -1,153 +0,0 @@
-// 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.
-
-#ifndef BASE_TASK_RUNNER_H_
-#define BASE_TASK_RUNNER_H_
-
-#include "base/base_export.h"
-#include "base/basictypes.h"
-#include "base/callback_forward.h"
-#include "base/memory/ref_counted.h"
-#include "base/time/time.h"
-
-namespace tracked_objects {
-class Location;
-} // namespace tracked_objects
-
-namespace base {
-
-struct TaskRunnerTraits;
-
-// A TaskRunner is an object that runs posted tasks (in the form of
-// Closure objects).  The TaskRunner interface provides a way of
-// decoupling task posting from the mechanics of how each task will be
-// run.  TaskRunner provides very weak guarantees as to how posted
-// tasks are run (or if they're run at all).  In particular, it only
-// guarantees:
-//
-//   - Posting a task will not run it synchronously.  That is, no
-//     Post*Task method will call task.Run() directly.
-//
-//   - Increasing the delay can only delay when the task gets run.
-//     That is, increasing the delay may not affect when the task gets
-//     run, or it could make it run later than it normally would, but
-//     it won't make it run earlier than it normally would.
-//
-// TaskRunner does not guarantee the order in which posted tasks are
-// run, whether tasks overlap, or whether they're run on a particular
-// thread.  Also it does not guarantee a memory model for shared data
-// between tasks.  (In other words, you should use your own
-// synchronization/locking primitives if you need to share data
-// between tasks.)
-//
-// Implementations of TaskRunner should be thread-safe in that all
-// methods must be safe to call on any thread.  Ownership semantics
-// for TaskRunners are in general not clear, which is why the
-// interface itself is RefCountedThreadSafe.
-//
-// Some theoretical implementations of TaskRunner:
-//
-//   - A TaskRunner that uses a thread pool to run posted tasks.
-//
-//   - A TaskRunner that, for each task, spawns a non-joinable thread
-//     to run that task and immediately quit.
-//
-//   - A TaskRunner that stores the list of posted tasks and has a
-//     method Run() that runs each runnable task in random order.
-class BASE_EXPORT TaskRunner
-    : public RefCountedThreadSafe<TaskRunner, TaskRunnerTraits> {
- public:
-  // Posts the given task to be run.  Returns true if the task may be
-  // run at some point in the future, and false if the task definitely
-  // will not be run.
-  //
-  // Equivalent to PostDelayedTask(from_here, task, 0).
-  bool PostTask(const tracked_objects::Location& from_here,
-                const Closure& task);
-
-  // Like PostTask, but tries to run the posted task only after
-  // |delay_ms| has passed.
-  //
-  // It is valid for an implementation to ignore |delay_ms|; that is,
-  // to have PostDelayedTask behave the same as PostTask.
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const Closure& task,
-                               base::TimeDelta delay) = 0;
-
-  // Returns true if the current thread is a thread on which a task
-  // may be run, and false if no task will be run on the current
-  // thread.
-  //
-  // It is valid for an implementation to always return true, or in
-  // general to use 'true' as a default value.
-  virtual bool RunsTasksOnCurrentThread() const = 0;
-
-  // Posts |task| on the current TaskRunner.  On completion, |reply|
-  // is posted to the thread that called PostTaskAndReply().  Both
-  // |task| and |reply| are guaranteed to be deleted on the thread
-  // from which PostTaskAndReply() is invoked.  This allows objects
-  // that must be deleted on the originating thread to be bound into
-  // the |task| and |reply| Closures.  In particular, it can be useful
-  // to use WeakPtr<> in the |reply| Closure so that the reply
-  // operation can be canceled. See the following pseudo-code:
-  //
-  // class DataBuffer : public RefCountedThreadSafe<DataBuffer> {
-  //  public:
-  //   // Called to add data into a buffer.
-  //   void AddData(void* buf, size_t length);
-  //   ...
-  // };
-  //
-  //
-  // class DataLoader : public SupportsWeakPtr<DataLoader> {
-  //  public:
-  //    void GetData() {
-  //      scoped_refptr<DataBuffer> buffer = new DataBuffer();
-  //      target_thread_.task_runner()->PostTaskAndReply(
-  //          FROM_HERE,
-  //          base::Bind(&DataBuffer::AddData, buffer),
-  //          base::Bind(&DataLoader::OnDataReceived, AsWeakPtr(), buffer));
-  //    }
-  //
-  //  private:
-  //    void OnDataReceived(scoped_refptr<DataBuffer> buffer) {
-  //      // Do something with buffer.
-  //    }
-  // };
-  //
-  //
-  // Things to notice:
-  //   * Results of |task| are shared with |reply| by binding a shared argument
-  //     (a DataBuffer instance).
-  //   * The DataLoader object has no special thread safety.
-  //   * The DataLoader object can be deleted while |task| is still running,
-  //     and the reply will cancel itself safely because it is bound to a
-  //     WeakPtr<>.
-  bool PostTaskAndReply(const tracked_objects::Location& from_here,
-                        const Closure& task,
-                        const Closure& reply);
-
- protected:
-  friend struct TaskRunnerTraits;
-
-  // Only the Windows debug build seems to need this: see
-  // http://crbug.com/112250.
-  friend class RefCountedThreadSafe<TaskRunner, TaskRunnerTraits>;
-
-  TaskRunner();
-  virtual ~TaskRunner();
-
-  // Called when this object should be destroyed.  By default simply
-  // deletes |this|, but can be overridden to do something else, like
-  // delete on a certain thread.
-  virtual void OnDestruct() const;
-};
-
-struct BASE_EXPORT TaskRunnerTraits {
-  static void Destruct(const TaskRunner* task_runner);
-};
-
-}  // namespace base
-
-#endif  // BASE_TASK_RUNNER_H_