Check PiP permission before entering auto pip

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/c9raN4jiaNqbiV7DF4YTJ6
Bug: 194272108
Test: try auto-enter-pip with permission disabled
Change-Id: I2c6112a299866744255b3cfe5c108fadfb2715af
1 file changed