Added am command for test docked stack resizing.
Added am command for test docked stack resizing.

Change-Id: I79f88d4dea4ed87336f9859b9d655cbf5466dbe0

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