tree ad07315d1fd80d81ffc4b0be5888bddf1889a4d1
parent 6798bc300e311c633c90ff67ccff09f7bb679c21
author Garfield Tan <xutan@google.com> 1512521026 -0800
committer Garfield Tan <xutan@google.com> 1512593707 -0800

Allow subclass of TaskRecord.

OEM can set TaskRecordFactory to create their own TaskRecord to support
more states.

Bug: 70029361
Test: go/wm-smoke w/o PiP because sailfish doesn't seem to have that.
Change-Id: I45d01e65c97fd6bc7857021d9c8bedbc249cd433