Hide Preference title when empty.
Hide Preference title when empty.

Change-Id: I1c1d73f5a4647657c7da65c72192fbac061fe259

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base