Add a gyp/gn variable for whether to use iLBC or not

webrtc/modules/audio_coding/BUILD.gn

 # 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/webrtc.gni")
 
 source_set("rent_a_codec") {
   sources = [
     "acm2/acm_codec_database.cc",
     "acm2/acm_codec_database.h",
     "acm2/rent_a_codec.cc",
     "acm2/rent_a_codec.h",
   ]
   configs += [ "../..:common_config" ]
   public_configs = [ "../..:common_inherited_config" ]
   deps = [
     "../..:webrtc_common",
   ]
 
   defines = []
+  if (rtc_include_ilbc) {
+    defines += [ "WEBRTC_CODEC_ILBC" ]
+  }
   if (rtc_include_opus) {
     defines += [ "WEBRTC_CODEC_OPUS" ]
   }
   if (!build_with_mozilla) {
     if (current_cpu == "arm") {
       defines += [ "WEBRTC_CODEC_ISACFX" ]
     } else {
       defines += [ "WEBRTC_CODEC_ISAC" ]
     }
     defines += [ "WEBRTC_CODEC_G722" ]
   }
   if (!build_with_mozilla && !build_with_chromium) {
-    defines += [
-      "WEBRTC_CODEC_ILBC",
-      "WEBRTC_CODEC_RED",
-    ]
+    defines += [ "WEBRTC_CODEC_RED" ]
   }
 }
 
 config("audio_coding_config") {
   include_dirs = [
     "include",
     "../include",
   ]
 }
 
@@ skipping 44 matching lines @@
     ":g711",
     ":neteq",
     ":pcm16b",
     ":rent_a_codec",
     "../..:rtc_event_log",
     "../..:webrtc_common",
     "../../common_audio",
     "../../system_wrappers",
   ]
 
+  if (rtc_include_ilbc) {
+    defines += [ "WEBRTC_CODEC_ILBC" ]
+    deps += [ ":ilbc" ]
+  }
   if (rtc_include_opus) {
     defines += [ "WEBRTC_CODEC_OPUS" ]
     deps += [ ":webrtc_opus" ]
   }
   if (!build_with_mozilla) {
     if (current_cpu == "arm") {
       defines += [ "WEBRTC_CODEC_ISACFX" ]
       deps += [ ":isac_fix" ]
     } else {
       defines += [ "WEBRTC_CODEC_ISAC" ]
       deps += [ ":isac" ]
     }
     defines += [ "WEBRTC_CODEC_G722" ]
     deps += [ ":g722" ]
   }
   if (!build_with_mozilla && !build_with_chromium) {
-    defines += [
-      "WEBRTC_CODEC_ILBC",
-      "WEBRTC_CODEC_RED",
-    ]
-    deps += [
-      ":ilbc",
-      ":red",
-    ]
+    defines += [ "WEBRTC_CODEC_RED" ]
+    deps += [ ":red" ]
   }
 }
 
 source_set("audio_decoder_interface") {
   sources = [
     "codecs/audio_decoder.cc",
     "codecs/audio_decoder.h",
   ]
   configs += [ "../..:common_config" ]
   public_configs = [ "../..:common_inherited_config" ]
@@ skipping 703 matching lines @@
     ":cng",
     ":g711",
     ":pcm16b",
     "../..:webrtc_common",
     "../../common_audio",
     "../../system_wrappers",
   ]
 
   defines = []
 
+  if (rtc_include_ilbc) {
+    defines += [ "WEBRTC_CODEC_ILBC" ]
+    deps += [ ":ilbc" ]
+  }
   if (rtc_include_opus) {
     defines += [ "WEBRTC_CODEC_OPUS" ]
     deps += [ ":webrtc_opus" ]
   }
   if (!build_with_mozilla) {
     if (current_cpu == "arm") {
       defines += [ "WEBRTC_CODEC_ISACFX" ]
       deps += [ ":isac_fix" ]
     } else {
       defines += [ "WEBRTC_CODEC_ISAC" ]
       deps += [ ":isac" ]
     }
     defines += [ "WEBRTC_CODEC_G722" ]
     deps += [ ":g722" ]
   }
-  if (!build_with_mozilla && !build_with_chromium) {
-    defines += [ "WEBRTC_CODEC_ILBC" ]
-    deps += [ ":ilbc" ]
-  }
 }