Remove webrtc/sound/ subdir.

webrtc/webrtc.gyp

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 {
   'variables': {
     'webrtc_all_dependencies': [
       'base/base.gyp:*',
-      'sound/sound.gyp:*',
       'common.gyp:*',
       'common_audio/common_audio.gyp:*',
       'common_video/common_video.gyp:*',
       'media/media.gyp:*',
       'modules/modules.gyp:*',
       'p2p/p2p.gyp:*',
       'system_wrappers/system_wrappers.gyp:*',
       'tools/tools.gyp:*',
       'voice_engine/voice_engine.gyp:*',
       '<(webrtc_vp8_dir)/vp8.gyp:*',
@@ skipping 12 matching lines @@
         ],
       },
     }],
     ['include_tests==1', {
       'includes': [
         'libjingle/xmllite/xmllite_tests.gypi',
         'libjingle/xmpp/xmpp_tests.gypi',
         'media/media_tests.gypi',
         'p2p/p2p_tests.gypi',
         'pc/pc_tests.gypi',
-        'sound/sound_tests.gypi',
         'webrtc_tests.gypi',
       ],
     }],
     ['enable_protobuf==1', {
       'targets': [
         {
           # This target should only be built if enable_protobuf is defined
           'target_name': 'rtc_event_log_proto',
           'type': 'static_library',
           'sources': ['call/rtc_event_log.proto',],
@@ skipping 103 matching lines @@
           ],
           'defines': [
             'ENABLE_RTC_EVENT_LOG',
           ],
         }],
       ],
     },
 
   ],
 }