Bug 955261 - Update to Mozilla 19: update patches, r=florian.

im/confvars.sh

@@ -9,8 +9,6 @@ MOZ_ENABLE_LIBXUL=1
 MOZ_CHROME_FILE_FORMAT=omni
 MOZ_UPDATER=1
 MOZ_MATHML=
-# WebRTC doesn't compile correctly on Mac on Mozilla 18.
-MOZ_WEBRTC=
 
 MOZ_APP_VERSION_TXT=${_topsrcdir}/$MOZ_BUILD_APP/config/version.txt
 MOZ_APP_VERSION=`cat $MOZ_APP_VERSION_TXT`