Proof of concept for tr1-based Task replacement.

base/message_loop.h

 // Copyright (c) 2006-2008 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_MESSAGE_LOOP_H_
 #define BASE_MESSAGE_LOOP_H_
 #pragma once
 
 #include <queue>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/lock.h"
 #include "base/message_pump.h"
 #include "base/observer_list.h"
 #include "base/ref_counted.h"
 #include "base/task.h"
+#include "base/closure.h"
 
 #if defined(OS_WIN)
 // We need this to declare base::MessagePumpWin::Dispatcher, which we should
 // really just eliminate.
 #include "base/message_pump_win.h"
 #elif defined(OS_POSIX)
 #include "base/message_pump_libevent.h"
 #if !defined(OS_MACOSX)
 #include "base/message_pump_glib.h"
 #endif
@@ skipping 92 matching lines @@
   // The NonNestable variants work similarly except that they promise never to
   // dispatch the task from a nested invocation of MessageLoop::Run.  Instead,
   // such tasks get deferred until the top-most MessageLoop::Run is executing.
   //
   // The MessageLoop takes ownership of the Task, and deletes it after it has
   // been Run().
   //
   // NOTE: These methods may be called on any thread.  The Task will be invoked
   // on the thread that executes MessageLoop::Run().
 
+  void PostClosure(
+      const tracked_objects::Location& from_here, base::Closure closure);
+
   void PostTask(
       const tracked_objects::Location& from_here, Task* task);
 
   void PostDelayedTask(
       const tracked_objects::Location& from_here, Task* task, int64 delay_ms);
 
+  void PostDelayedClosure(
+      const tracked_objects::Location& from_here, base::Closure closure,
+      int64 delay_ms);
+
   void PostNonNestableTask(
       const tracked_objects::Location& from_here, Task* task);
 
   void PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here, Task* task, int64 delay_ms);
 
   // A variant on PostTask that deletes the given object.  This is useful
   // if the object needs to live until the next run of the MessageLoop (for
   // example, deleting a RenderProcessHost from within an IPC callback is not
   // good).
@@ skipping 463 matching lines @@
 #endif  // defined(OS_POSIX)
 };
 
 // Do not add any member variables to MessageLoopForIO!  This is important b/c
 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO).  Any extra
 // data that you need should be stored on the MessageLoop's pump_ instance.
 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForIO),
                MessageLoopForIO_should_not_have_extra_member_variables);
 
 #endif  // BASE_MESSAGE_LOOP_H_