Ignore empty layers.
Ignore empty layers.

Change-Id: Ib2f99cdab654881fe079306e27d87c5ef9535700

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