Make ChildThread::current() and ChildProcess::current() only work on the main thread of the child...

content/renderer/pepper/pepper_platform_audio_output_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 "content/renderer/pepper/pepper_platform_audio_output_impl.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "build/build_config.h"
@@ skipping 117 matching lines @@
 
   ChildProcess::current()->io_message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&PepperPlatformAudioOutputImpl::InitializeOnIOThread,
                  this, params));
   return true;
 }
 
 void PepperPlatformAudioOutputImpl::InitializeOnIOThread(
     const media::AudioParameters& params) {
-  DCHECK(ChildProcess::current()->io_message_loop_proxy()->
-      BelongsToCurrentThread());
   const int kSessionId = 0;
   if (ipc_)
     ipc_->CreateStream(this, params, kSessionId);
 }
 
 void PepperPlatformAudioOutputImpl::StartPlaybackOnIOThread() {
-  DCHECK(ChildProcess::current()->io_message_loop_proxy()->
-      BelongsToCurrentThread());
   if (ipc_)
     ipc_->PlayStream();
 }
 
 void PepperPlatformAudioOutputImpl::StopPlaybackOnIOThread() {
-  DCHECK(ChildProcess::current()->io_message_loop_proxy()->
-      BelongsToCurrentThread());
   if (ipc_)
     ipc_->PauseStream();
 }
 
 void PepperPlatformAudioOutputImpl::ShutDownOnIOThread() {
-  DCHECK(ChildProcess::current()->io_message_loop_proxy()->
-      BelongsToCurrentThread());
-
   // Make sure we don't call shutdown more than once.
   if (!ipc_)
     return;
 
   ipc_->CloseStream();
   ipc_.reset();
 
   Release();  // Release for the delegate, balances out the reference taken in
               // PepperPluginDelegateImpl::CreateAudio.
 }
 
 }  // namespace content