Framework: AOSP Fix - starting window memory leak

If starting window is added to arrays like mViews in
WindowManagerImpl.java, but not accepted by WindowManagerService,
we leak starting windows. To avoid leaking, remove the view
from WindowManager.

Change-Id: I4d98b883e9dfaf5e71bdece385643ba1b59b2633
PIE: support for expandable notifications

Change-Id: I47721bf8693b5fde008c01cfc70201c43a80ae18