media: Optimize HW Video to 2D Canvas copy.

media/blink/webmediaplayer_params.cc

 // Copyright 2013 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 "media/blink/webmediaplayer_params.h"
 
 #include "base/single_thread_task_runner.h"
 #include "media/base/audio_renderer_sink.h"
 #include "media/base/media_log.h"
 #include "media/filters/gpu_video_accelerator_factories.h"
 
 namespace media {
 
 WebMediaPlayerParams::WebMediaPlayerParams(
-    const base::Callback<void(const base::Closure&)>& defer_load_cb,
+    const DeferLoadCB& defer_load_cb,
     const scoped_refptr<AudioRendererSink>& audio_renderer_sink,
     const AudioHardwareConfig& audio_hardware_config,
     const scoped_refptr<MediaLog>& media_log,
     const scoped_refptr<GpuVideoAcceleratorFactories>& gpu_factories,
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner,
     const EncryptedMediaPlayerSupportCreateCB&
         encrypted_media_player_support_cb,
+    const ContextProviderCB& shared_main_thread_context_provider_cb,
     blink::WebContentDecryptionModule* initial_cdm)
     : defer_load_cb_(defer_load_cb),
       audio_renderer_sink_(audio_renderer_sink),
       audio_hardware_config_(audio_hardware_config),
       media_log_(media_log),
       gpu_factories_(gpu_factories),
       media_task_runner_(media_task_runner),
       compositor_task_runner_(compositor_task_runner),
       encrypted_media_player_support_cb_(encrypted_media_player_support_cb),
+      shared_main_thread_context_provider_cb_(
+          shared_main_thread_context_provider_cb),
       initial_cdm_(initial_cdm) {
 }
 
 WebMediaPlayerParams::~WebMediaPlayerParams() {}
 
 scoped_ptr<EncryptedMediaPlayerSupport>
 WebMediaPlayerParams::CreateEncryptedMediaPlayerSupport(
     blink::WebMediaPlayerClient* client) const {
   scoped_ptr<EncryptedMediaPlayerSupport> encrypted_media_support =
       encrypted_media_player_support_cb_.Run(client);
   if (encrypted_media_support)
     encrypted_media_support->SetInitialContentDecryptionModule(initial_cdm_);
   return encrypted_media_support.Pass();
 }
 
 }  // namespace media