Pass the keep clear areas through proper implementation. The PipController is not registered as DisplayWindowListener, but this inner implementation is.

Bug: 183746978
Test: atest PipControllerTest, manually via extra log statement I noticed it's not being receiving the keep clear areas changes
Change-Id: Iaae4aad3dfd1dd5a5dbab79f91efab3d52b94f80
2 files changed