Fix issue #1930911: Crash in system process
Fix issue #1930911: Crash in system process

Ensure that we do all the work for removing a window's view
hierarchy in that window's thread.

Change-Id: Ib7c1701aee6b541b75fd1a680f6987f959f2ba88

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