Revert of media config: expand is_encrypted to a struct.

chromecast/media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'chromecast_branding%': 'public',
     'use_alsa%': 0,
 
@@ skipping 211 matching lines @@
         'cma/ipc_streamer/audio_decoder_config_marshaller.cc',
         'cma/ipc_streamer/audio_decoder_config_marshaller.h',
         'cma/ipc_streamer/av_streamer_proxy.cc',
         'cma/ipc_streamer/av_streamer_proxy.h',
         'cma/ipc_streamer/coded_frame_provider_host.cc',
         'cma/ipc_streamer/coded_frame_provider_host.h',
         'cma/ipc_streamer/decoder_buffer_base_marshaller.cc',
         'cma/ipc_streamer/decoder_buffer_base_marshaller.h',
         'cma/ipc_streamer/decrypt_config_marshaller.cc',
         'cma/ipc_streamer/decrypt_config_marshaller.h',
-        'cma/ipc_streamer/encryption_scheme_marshaller.cc',
-        'cma/ipc_streamer/encryption_scheme_marshaller.h',
         'cma/ipc_streamer/video_decoder_config_marshaller.cc',
         'cma/ipc_streamer/video_decoder_config_marshaller.h',
       ],
     },
     {
       'target_name': 'cma_pipeline',
       'type': '<(component)',
       'dependencies': [
         'cma_base',
         'cma_decoder',
@@ skipping 230 matching lines @@
           'sources': [
             'cma/backend/alsa/mock_alsa_wrapper.cc',
             'cma/backend/alsa/mock_alsa_wrapper.h',
             'cma/backend/alsa/stream_mixer_alsa_unittest.cc',
           ],
         },  # end of target 'alsa_cma_backend_unittests'
       ],  # end of targets
     }],
   ],  # end of conditions
 }