disable media stream creation when enable_webrtc=0

content/content_renderer.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../jingle/jingle.gyp:jingle_glue',
     '../net/net.gyp:net',
     '../ppapi/ppapi_internal.gyp:ppapi_proxy',
     '../ppapi/ppapi_internal.gyp:ppapi_shared',
@@ skipping 83 matching lines @@
     'renderer/media/audio_input_device.h',
     'renderer/media/audio_input_message_filter.cc',
     'renderer/media/audio_input_message_filter.h',
     'renderer/media/audio_message_filter.cc',
     'renderer/media/audio_message_filter.h',
     'renderer/media/audio_renderer_impl.cc',
     'renderer/media/audio_renderer_impl.h',
     'renderer/media/capture_video_decoder.cc',
     'renderer/media/capture_video_decoder.h',
     'renderer/media/media_stream_dependency_factory.h',
-    'renderer/media/media_stream_dispatcher.cc',
     'renderer/media/media_stream_dispatcher.h',
     'renderer/media/media_stream_dispatcher_eventhandler.h',
     'renderer/media/media_stream_impl.h',
     'renderer/media/pepper_platform_video_decoder_impl.cc',
     'renderer/media/pepper_platform_video_decoder_impl.h',
     'renderer/media/render_audiosourceprovider.cc',
     'renderer/media/render_audiosourceprovider.h',
     'renderer/media/render_media_log.cc',
     'renderer/media/render_media_log.h',
     'renderer/media/renderer_gpu_video_decoder_factories.cc',
@@ skipping 142 matching lines @@
     ['enable_webrtc==1', {
       'dependencies': [
         '../third_party/libjingle/libjingle.gyp:libjingle_peerconnection',
         '../third_party/webrtc/modules/modules.gyp:video_capture_module',
         '../third_party/webrtc/system_wrappers/source/system_wrappers.gyp:system_wrappers',
         '../third_party/webrtc/video_engine/video_engine.gyp:video_engine_core',
         '../third_party/webrtc/voice_engine/voice_engine.gyp:voice_engine_core',
       ],
       'sources': [
         'renderer/media/media_stream_dependency_factory.cc',
+        'renderer/media/media_stream_dispatcher.cc',
         'renderer/media/media_stream_impl.cc',
         'renderer/media/peer_connection_handler.cc',
         'renderer/media/peer_connection_handler.h',
         'renderer/media/video_capture_module_impl.cc',
         'renderer/media/video_capture_module_impl.h',
         'renderer/media/webrtc_audio_device_impl.cc',
         'renderer/media/webrtc_audio_device_impl.h',
       ],
-    }, {
-      'sources': [
-        'renderer/media/media_stream_dependency_factory_stub.cc',
-        'renderer/media/media_stream_impl_stub.cc',
-      ],
     }],
     ['java_bridge==1', {
       'defines': [
         'ENABLE_JAVA_BRIDGE',
       ],
     }, {
       'sources!': [
         'renderer/java/java_bridge_channel.cc',
         'renderer/java/java_bridge_channel.h',
         'renderer/java/java_bridge_dispatcher.cc',
         'renderer/java/java_bridge_dispatcher.h',
       ],
     }],
   ],
 }