Remove dependency on AudioStub in ConnectionToClient

remoting/remoting_srcs.gypi

 # 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': {
     'daemon_controller_guid': '655bd819-c08c-4b04-80c2-f160739ff6ef',
     'rdp_desktop_session_guid': '6a7699f0-ee43-43e7-aa30-a6738f9bd470',
     'remoting_base_sources': [
       'base/auto_thread.cc',
@@ skipping 56 matching lines @@
       'codec/video_encoder_helper.cc',
       'codec/video_encoder_helper.h',
       'codec/video_encoder_verbatim.cc',
       'codec/video_encoder_verbatim.h',
       'codec/video_encoder_vpx.cc',
       'codec/video_encoder_vpx.h',
       'codec/webrtc_video_encoder_vpx.cc',
       'codec/webrtc_video_encoder_vpx.h',
     ],
     'remoting_protocol_sources': [
+      'protocol/audio_pump.cc',
+      'protocol/audio_pump.h',
       'protocol/audio_reader.cc',
       'protocol/audio_reader.h',
+      'protocol/audio_source.h',
       'protocol/audio_stub.h',
       'protocol/audio_writer.cc',
       'protocol/audio_writer.h',
       'protocol/auth_util.cc',
       'protocol/auth_util.h',
       'protocol/authenticator.cc',
       'protocol/authenticator.h',
       'protocol/capability_names.h',
       'protocol/channel_authenticator.h',
       'protocol/channel_dispatcher_base.cc',
@@ skipping 285 matching lines @@
       'client/gl_helpers.h',
       'client/gl_math.cc',
       'client/gl_math.h',
       'client/gl_renderer.cc',
       'client/gl_renderer.h',
       'client/gl_render_layer.cc',
       'client/gl_render_layer.h',
     ],
   }
 }