Remove task.h and finish base::Bind() migration.

content/renderer/gpu/gpu_video_decode_accelerator_host.cc

 // Copyright (c) 2011 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/gpu/gpu_video_decode_accelerator_host.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
-#include "base/task.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/gpu/gpu_channel_host.h"
 #include "content/renderer/render_thread_impl.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 
 using media::VideoDecodeAccelerator;
 
 GpuVideoDecodeAcceleratorHost::GpuVideoDecodeAcceleratorHost(
@@ skipping 151 matching lines @@
     client_->NotifyEndOfStream();
 }
 
 void GpuVideoDecodeAcceleratorHost::OnErrorNotification(uint32 error) {
   DCHECK(CalledOnValidThread());
   if (!client_)
     return;
   client_->NotifyError(
       static_cast<media::VideoDecodeAccelerator::Error>(error));
 }