[chromecast] Fix build with enable_mojo_media=true.

chromecast/media/cma/pipeline/media_pipeline_impl.cc

 // Copyright 2014 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 "chromecast/media/cma/pipeline/media_pipeline_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 125 matching lines @@
     buffering_controller_.reset(new BufferingController(
         buffering_config,
         base::Bind(&MediaPipelineImpl::OnBufferingNotification, weak_this_)));
   }
 }
 
 void MediaPipelineImpl::SetClient(const MediaPipelineClient& client) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!client.error_cb.is_null());
   DCHECK(!client.buffering_state_cb.is_null());
-  DCHECK(!client.pipeline_backend_created_cb.is_null());
-  DCHECK(!client.pipeline_backend_destroyed_cb.is_null());
   client_ = client;
 }
 
 void MediaPipelineImpl::SetCdm(int cdm_id) {
   CMALOG(kLogControl) << __FUNCTION__ << " cdm_id=" << cdm_id;
   DCHECK(thread_checker_.CalledOnValidThread());
   NOTIMPLEMENTED();
   // TODO(gunsch): SetCdm(int) is not implemented.
   // One possibility would be a GetCdmByIdCB that's passed in.
 }
@@ skipping 357 matching lines @@
 
 void MediaPipelineImpl::ResetBitrateState() {
   elapsed_time_delta_ = base::TimeDelta::FromSeconds(0);
   audio_bytes_for_bitrate_estimation_ = 0;
   video_bytes_for_bitrate_estimation_ = 0;
   last_sample_time_ = base::TimeTicks::Now();
 }
 
 }  // namespace media
 }  // namespace chromecast