GN: Change group deps to public_deps.

webrtc/libjingle/xmpp/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("../../build/webrtc.gni")
 
 group("xmpp") {
-  deps = [
+  public_deps = [
     ":rtc_xmpp",
   ]
 }
 
 config("xmpp_warnings_config") {
   # GN orders flags on a target before flags from configs. The default config
   # adds these flags so to cancel them out they need to come from a config and
   # cannot be on the target directly.
   if (is_android) {
     cflags = [ "-Wno-error" ]
@@ skipping 123 matching lines @@
     }
   }
 
   if (is_posix && is_debug) {
     # The Chromium build/common.gypi defines this for all posix
     # _except_ for ios & mac.  We want it there as well, e.g.
     # because ASSERT and friends trigger off of it.
     defines += [ "_DEBUG" ]
   }
 }