Merge changes from topic "presubmit-am-d8f5066444f243d0a0e8921fe51486e6"
* changes:
[automerge] Support enter PIP on Task switch for TaskFragment 2p: 96f7464d 2p: d711b211
[automerge] Support enter PIP on Task switch for TaskFragment 2p: 96f7464d
Support enter PIP on Task switch for TaskFragment