tree 37cdd755658fe6856e8f79f076808db1de8ddc8a
parent 8b702edea1bb211316e1deb3cbe291f2d48d7f77
author Jorim Jaggi <jjaggi@google.com> 1485184853 +0100
committer Jorim Jaggi <jjaggi@google.com> 1485271171 +0100

Fill task snapshot with background color

Make sure to fill the portions that are not covered by the
snapshot are filled with the task background color.

Also fix an issue where the starting window was removed across
configuration changes.

Test: runtest frameworks-services -c
com.android.server.wm.TaskSnapshotSurfaceTest
Bug: 31339431
Change-Id: I2451be87aff79b337015ab4bba72cfa03c0d3582