Run VDA::Decode on GPU IO thread if VDA supports it.

content/common/gpu/media/exynos_video_decode_accelerator.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 <dlfcn.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/videodev2.h>
 #include <poll.h>
 #include <sys/eventfd.h>
@@ skipping 397 matching lines @@
 
   child_message_loop_proxy_->PostTask(FROM_HERE, base::Bind(
       &Client::NotifyInitializeDone, client_));
   return true;
 }
 
 void ExynosVideoDecodeAccelerator::Decode(
     const media::BitstreamBuffer& bitstream_buffer) {
   DVLOG(1) << "Decode(): input_id=" << bitstream_buffer.id()
            << ", size=" << bitstream_buffer.size();
-  DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
+  DCHECK(!child_message_loop_proxy_->BelongsToCurrentThread());

[Ami GONE FROM CHROMIUM, 2013/08/22 14:52:03]

Better to affirmatively check being on IO thread.

 
   scoped_ptr<BitstreamBufferRef> bitstream_record(new BitstreamBufferRef(
       client_, child_message_loop_proxy_,
       new base::SharedMemory(bitstream_buffer.handle(), true),
       bitstream_buffer.size(), bitstream_buffer.id()));
   if (!bitstream_record->shm->Map(bitstream_buffer.size())) {
     DLOG(ERROR) << "Decode(): could not map bitstream_buffer";
     NOTIFY_ERROR(UNREADABLE_INPUT);
     return;
   }
@@ skipping 2014 matching lines @@
   DestroyGscOutputBuffers();
   DestroyMfcOutputBuffers();
 
   // Finish resolution change on decoder thread.
   decoder_thread_.message_loop()->PostTask(FROM_HERE, base::Bind(
       &ExynosVideoDecodeAccelerator::FinishResolutionChange,
       base::Unretained(this)));
 }
 
 }  // namespace content