Add mojo interface+impl for audio stream control.

media/mojo/services/BUILD.gn

 # 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.
 
 import("//media/media_options.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 import("//services/service_manager/public/tools/test/service_test.gni")
 import("//testing/test.gni")
@@ skipping 61 matching lines @@
     "interface_factory_impl.h",
     "media_mojo_export.h",
     "media_resource_shim.cc",
     "media_resource_shim.h",
     "media_service.cc",
     "media_service.h",
     "media_service_factory.cc",
     "media_service_factory.h",
     "mojo_audio_decoder_service.cc",
     "mojo_audio_decoder_service.h",
+    "mojo_audio_output.cc",
+    "mojo_audio_output.h",
     "mojo_cdm_allocator.cc",
     "mojo_cdm_allocator.h",
     "mojo_cdm_promise.cc",
     "mojo_cdm_promise.h",
     "mojo_cdm_service.cc",
     "mojo_cdm_service.h",
     "mojo_cdm_service_context.cc",
     "mojo_cdm_service_context.h",
     "mojo_decryptor_service.cc",
     "mojo_decryptor_service.h",
@@ skipping 130 matching lines @@
 
 catalog("media_service_unittests_catalog") {
   embedded_services = [ ":test_manifest" ]
   standalone_services = [ ":media_manifest" ]
 }
 
 catalog("media_pipeline_integration_unittests_catalog") {
   embedded_services = [ ":pipeline_test_manifest" ]
   standalone_services = [ ":media_manifest" ]
 }