Revert of Remove usage of deprecated g_type_init API

webrtc/examples/peerconnection/client/linux/main.cc

Index: webrtc/examples/peerconnection/client/linux/main.cc
diff --git a/webrtc/examples/peerconnection/client/linux/main.cc b/webrtc/examples/peerconnection/client/linux/main.cc
index 2982c287f12beb4ee61072820fa1e825d588b9a2..4db929c82e95e821d8264800b4f0960d8f370436 100644
--- a/webrtc/examples/peerconnection/client/linux/main.cc
+++ b/webrtc/examples/peerconnection/client/linux/main.cc
@@ -54,11 +54,7 @@
 
 int main(int argc, char* argv[]) {
   gtk_init(&argc, &argv);
-  // g_type_init API is deprecated (and does nothing) since glib 2.35.0, see:
-  // https://mail.gnome.org/archives/commits-list/2012-November/msg07809.html
-#if !GLIB_CHECK_VERSION(2, 35, 0)
-    g_type_init();
-#endif
+  g_type_init();
   // g_thread_init API is deprecated since glib 2.31.0, see release note:
   // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
 #if !GLIB_CHECK_VERSION(2, 31, 0)