HeadsUp: Only remove heads up if attached to window

Attempting to remove mHeadsUpNoficiationView from the window manager
when it is not currently attached will throw an IllegalArgumentException
so we check if it is attached and if so remove it, otherwise carry on.

As well remove possible left children in statusbarview

Change-Id: Ida916eba496c4183e47288ef24a8a93c46a7eddf
SystemUI: improve one finger notification expansion

Sometimes the quick settings ribbon would eat the initial ACTION_DOWN
setting mInitialTouchY in the expand helper, but we are clearly not in a
notification that we can expand here. So only set the initial y point if
we are inside the notification scrollview.

Change-Id: I628553ac15cc6b4ee3c682fe46bd1d96c6bc154d
Revert "audio: Inform audio HAL if it is a voice call initiated by Telephony"

This reverts commit 69c312fd14d06cdae6213cdbdddbc851918b41fd.

Change-Id: I1130da5141d6116ad05d9466283fd3275fcbfd58
Revert "audio: Fixed dead lock in AudioService during volume change"

This reverts commit 2d99ad7f7f4bc2f9124a4fe505c2f8ea699ae74e.

Change-Id: I7c6f288b5761618ac13cd0d275e5d45c9f177c50
Merge "HeadsUp: Only remove heads up if attached to window" into kk4.4-caf
Merge "SystemUI: improve one finger notification expansion" into kk4.4-caf
Merge "Revert "audio: Inform audio HAL if it is a voice call initiated by Telephony"" into kk4.4-caf
Merge "Revert "audio: Fixed dead lock in AudioService during volume change"" into kk4.4-caf