Finalize the support for building WebRTC library for iOS with bitcode

webrtc/build/webrtc.gni

 # Copyright (c) 2014 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("//build/config/arm.gni")
 import("//build/config/features.gni")
@@ skipping 174 matching lines @@
 # native code is built as part of Chromium.
 rtc_common_configs = [ webrtc_root + ":common_config" ]
 
 # Global public configuration that should be applied to all WebRTC targets. You
 # normally shouldn't need to include this in your target as it's automatically
 # included when using the rtc_* templates. It set the defines, include paths and
 # compilation warnings that should be propagated to dependents of the targets
 # depending on the target having this config.
 rtc_common_inherited_config = webrtc_root + ":common_inherited_config"
 
-if (is_ios) {
-  rtc_common_configs += [ webrtc_root + "/build/ios:rtc_ios_common_config" ]
-}
-
 # Common configs to remove or add in all rtc targets.
 rtc_remove_configs = []
 rtc_add_configs = rtc_common_configs
 
 set_defaults("rtc_test") {
   configs = rtc_add_configs
   suppressed_configs = []
 }
 
 set_defaults("rtc_source_set") {
@@ skipping 137 matching lines @@
       _rebased_sources = rebase_path(invoker.sources, root_build_dir)
 
       args = [ "--srcjar=$_rebased_srcjar_path" ] + _rebased_sources
 
       outputs = [
         _srcjar_path,
       ]
     }
   }
 }