Bug 767250: Stop B2G/Gonk from trying to build Android.mk's in media/webrtc rs=mwu

media/webrtc/Android.mk

@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# empty file to block B2G/Gonk from trying to build anything inside media/webrtc