Create ListPopupWindow handler against main looper
Create ListPopupWindow handler against main looper

Required for CTS tests.

Bug: 21664698
Change-Id: Id33c672d7d50a2162c519249bbbf5b8081faf830

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