Load CMA backend from shared library

chromecast/media/cma/pipeline/audio_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/audio_pipeline_impl.h"
 
 #include "base/bind.h"
-#include "chromecast/media/cma/backend/audio_pipeline_device.h"
 #include "chromecast/media/cma/base/buffering_defs.h"
 #include "chromecast/media/cma/base/cma_logging.h"
 #include "chromecast/media/cma/base/coded_frame_provider.h"
 #include "chromecast/media/cma/base/decoder_config_adapter.h"
 #include "chromecast/media/cma/pipeline/av_pipeline_impl.h"
+#include "chromecast/public/media/audio_pipeline_device.h"
 #include "chromecast/public/media/decoder_config.h"
 #include "media/base/audio_decoder_config.h"
 
 namespace chromecast {
 namespace media {
 
 namespace {
 const size_t kMaxAudioFrameSize = 32 * 1024;
 }
 
@@ skipping 130 matching lines @@
   delta_stats.audio_bytes_decoded =
       current_stats.audio_bytes_decoded - previous_stats_.audio_bytes_decoded;
 
   previous_stats_ = current_stats;
 
   audio_client_.statistics_cb.Run(delta_stats);
 }
 
 }  // namespace media
 }  // namespace chromecast