Send ScreenCaptureListener to native screen capture requests.

Allow for asynchronous screenshot by sending a ScreenCaptureListener to
handle screenshot callbacks. All existing calls are still synchronous
since the SurfaceControl method will block the caller until the results
from SurfaceFlinger are ready.

Test: power + volume down
Test: adb shell screencap
Bug: 162367424
Change-Id: I54c34003c0786b585dd20530a06dbd4b266e178c