AppRTCMobile: Use high resolution app icon on retina screens.

webrtc/examples/BUILD.gn

 # Copyright (c) 2016 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.
 
 import("../webrtc.gni")
 if (is_android) {
@@ skipping 307 matching lines @@
         "objc/AppRTCMobile/ios/resources/ic_call_end_black_24dp@2x.png",
         "objc/AppRTCMobile/ios/resources/ic_clear_black_24dp.png",
         "objc/AppRTCMobile/ios/resources/ic_clear_black_24dp@2x.png",
         "objc/AppRTCMobile/ios/resources/ic_settings_black_24dp.png",
         "objc/AppRTCMobile/ios/resources/ic_settings_black_24dp@2x.png",
         "objc/AppRTCMobile/ios/resources/ic_surround_sound_black_24dp.png",
         "objc/AppRTCMobile/ios/resources/ic_surround_sound_black_24dp@2x.png",
         "objc/AppRTCMobile/ios/resources/ic_switch_video_black_24dp.png",
         "objc/AppRTCMobile/ios/resources/ic_switch_video_black_24dp@2x.png",
         "objc/AppRTCMobile/ios/resources/mozart.mp3",
+        "objc/Icon-120.png",
+        "objc/Icon-180.png",
         "objc/Icon.png",
       ]
       outputs = [
         "{{bundle_resources_dir}}/{{source_file_part}}",
       ]
     }
   }
 
   if (is_mac) {
     rtc_static_library("AppRTCMobile_lib") {
@@ skipping 362 matching lines @@
 
     deps = [
       "../p2p:libstunprober",
       "../p2p:rtc_p2p",
       "../rtc_base:rtc_base",
       "../rtc_base:rtc_base_approved",
       "../system_wrappers:field_trial_default",
     ]
   }
 }