Enable OMTC for B2G

enable-omtc

#!/bin/sh
# Script to enable/disable OMTC
# Make disable-omtc a symlink to enable-omtc

#set -x
script_name=$(basename $0)

ENABLE_OMTC=/tmp/enable-omtc
DISABLE_OMTC=/tmp/disable-omtc
LOCAL_PREFS_JS=/tmp/prefs.js
PROFILE_DIR=$(adb shell echo -n "/data/b2g/mozilla/*.default")
REMOTE_PREFS_JS=${PROFILE_DIR}/prefs.js

rm -f ${LOCAL_PREFS_JS}
adb pull ${REMOTE_PREFS_JS} ${LOCAL_PREFS_JS}

if [ "${script_name}" == "enable-omtc" ]
then
    enable="true"
else
    enable="false"
fi

grep -v layers.offmainthreadcomposition.enabled ${LOCAL_PREFS_JS} > ${LOCAL_PREFS_JS}.tmp
echo 'user_pref("layers.offmainthreadcomposition.enabled", '${enable}');' >> ${LOCAL_PREFS_JS}.tmp

set -x
adb push ${LOCAL_PREFS_JS}.tmp ${REMOTE_PREFS_JS}
adb shell killall b2g