Actually rolling to the latest apprtc hash.

BUG=537686
TBR=kjellander@chromium.org

Review URL: https://codereview.chromium.org/1381773003 .
diff --git a/DEPS b/DEPS
index 58ff7f0..66fa07b 100644
--- a/DEPS
+++ b/DEPS
@@ -8,7 +8,7 @@
 
 deps = {
   'apprtc':
-    Var('git_url') + '/external/webrtc/apprtc@f36bf232abf207584816653d55ec5cf87d5b6252',
+    Var('git_url') + '/external/webrtc/apprtc@3168981efed7629fabee731a5ee74d3716b50652',
   'webrtc.DEPS/third_party/manifestdestiny':
     Var('git_url') + '/chromium/deps/manifestdestiny.git@46ae53ac463e23bfefec374a81806355ea598ac4',
   'webrtc.DEPS/third_party/mozdownload':