Cleanup of iOS AudioDevice implementation

webrtc/modules/audio_device/audio_device.gypi

 # 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.
 
 {
   'targets': [
@@ skipping 85 matching lines @@
             'android/fine_audio_buffer.cc',
             'android/fine_audio_buffer.h',
             'android/opensles_common.cc',
             'android/opensles_common.h',
             'android/opensles_player.cc',
             'android/opensles_player.h',
             'audio_device_impl.cc',
             'audio_device_impl.h',
             'ios/audio_device_ios.h',
             'ios/audio_device_ios.mm',
+            'ios/audio_device_not_implemented_ios.h',
+            'ios/audio_device_not_implemented_ios.mm',
             'linux/alsasymboltable_linux.cc',
             'linux/alsasymboltable_linux.h',
             'linux/audio_device_alsa_linux.cc',
             'linux/audio_device_alsa_linux.h',
             'linux/audio_mixer_manager_alsa_linux.cc',
             'linux/audio_mixer_manager_alsa_linux.h',
             'linux/latebindingsymboltable_linux.cc',
             'linux/latebindingsymboltable_linux.h',
             'mac/audio_device_mac.cc',
             'mac/audio_device_mac.h',
@@ skipping 134 matching lines @@
                 'audio_device_tests.isolate',
               ],
             },
           ],
         }],
       ],
     }], # include_tests
   ],
 }