[Chromoting] Remove CHECK() when posting a message to the plugin thread during shutdown. With the a…

remoting/base/auto_thread_task_runner.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 "remoting/base/auto_thread_task_runner.h"
 
 #include "base/logging.h"
 
 namespace remoting {
 
@@ skipping 22 matching lines @@
     const base::Closure& stop_callback)
     : parent_(parent),
       stop_callback_(stop_callback),
       task_runner_(task_runner) {
 }
 
 bool AutoThreadTaskRunner::PostDelayedTask(
     const tracked_objects::Location& from_here,
     const base::Closure& task,
     base::TimeDelta delay) {
-  // CHECK() makes sure that |task_runner_| is still running, - the assumption
-  // made by |AutoThreadTaskRunner| owners.
-  CHECK(task_runner_->PostDelayedTask(from_here, task, delay));
-  return true;
+  return task_runner_->PostDelayedTask(from_here, task, delay);
 }
 
 bool AutoThreadTaskRunner::PostNonNestableDelayedTask(
     const tracked_objects::Location& from_here,
     const base::Closure& task,
     base::TimeDelta delay) {
-  // CHECK() makes sure that |task_runner_| is still running, - the assumption
-  // made by |AutoThreadTaskRunner| owners.
-  CHECK(task_runner_->PostNonNestableDelayedTask(from_here, task, delay));
-  return true;
+  return task_runner_->PostNonNestableDelayedTask(from_here, task, delay);
 }
 
 bool AutoThreadTaskRunner::RunsTasksOnCurrentThread() const {
   return task_runner_->RunsTasksOnCurrentThread();
 }
 
 AutoThreadTaskRunner::~AutoThreadTaskRunner() {
   if (!stop_callback_.is_null())
     stop_callback_.Run();
 }
 
 }  // namespace remoting