Fix nativeGetAnimationFrameStats to use the correct times.

Changed the method to use actualPresentTimesNano instead of
desiredPresentTimesNano when initializing WindowAnimationFrameStats. The
WindowAnimationFrameStats.init(..) method expects the actual
presentation times, not the posted times.

Additionally, the desiredPresentTimesNano values are all invalid
(INT64_MAX) when working with window animation frames.

Change-Id: I5e5ce888dac859179ef06e4bbd8bfbd959521dd2