Replace forward_dependent_configs with public_deps

third_party/libjingle/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 
 # From third_party/libjingle/libjingle.gyp's target_defaults.
 config("jingle_unexported_configs") {
   defines = [
@@ skipping 99 matching lines @@
 config("jingle_all_dependent_configs") {
   if (is_debug) {
     # TODO(sergeyu): Fix libjingle to use NDEBUG instead of
     # _DEBUG and remove this define. See GYP file as well.
     defines = [ "_DEBUG" ]
   }
 }
 
 # From third_party/libjingle/libjingle.gyp's target_defaults.
 group("jingle_deps") {
+  public_deps = [
+    "//third_party/expat",
+  ]
   deps = [
     "//base",
     "//net",
-    "//third_party/expat",
     "//crypto:platform",
   ]
-  forward_dependent_configs_from = [
-    "//third_party/expat",
-  ]
 }
 
 # GYP version: third_party/libjingle.gyp:libjingle
 static_library("libjingle") {
   sources = [
     # List from third_party/libjingle/libjingle_common.gypi
     "source/talk/p2p/base/asyncstuntcpsocket.cc",
     "source/talk/p2p/base/asyncstuntcpsocket.h",
     "source/talk/p2p/base/basicpacketsocketfactory.cc",
     "source/talk/p2p/base/basicpacketsocketfactory.h",
@@ skipping 411 matching lines @@
       ":libjingle_webrtc_common",
       "//third_party/webrtc",
       "//third_party/webrtc/system_wrappers",
       "//third_party/webrtc/voice_engine",
     ]
   }
 
 }  # enable_webrtc
 
 # TODO(GYP): Port libjingle.gyp's enable_webrtc condition block.