tree ab2f28670042e78a8d204059ab2655f77120b4d9
parent f77ca5fa1890f1de92dd6a7002f4ad9d71b42a89
author Jiaquan He <hejq@google.com> 1482454079 -0800
committer Jiaquan He <hejq@google.com> 1482879144 -0800

Check split screen properly.

This commit detacts split screen by checking whether there's
a docked task instead of multi window mode.

Bug: 33847223
Bug: 32101881
Change-Id: I23ee11e57ded7c5e81d51cfbfea05500a879945c