Resample touch events on frame boundaries.

Bug: 6375101
Change-Id: I8774e366306bb2b6b4e42b913525bf25b0380ec3
diff --git a/include/androidfw/Input.h b/include/androidfw/Input.h
index a98e1a2..044f2bf 100644
--- a/include/androidfw/Input.h
+++ b/include/androidfw/Input.h
@@ -208,6 +208,7 @@
     status_t setAxisValue(int32_t axis, float value);
 
     void scale(float scale);
+    void lerp(const PointerCoords& a, const PointerCoords& b, float alpha);
 
     inline float getX() const {
         return getAxisValue(AMOTION_EVENT_AXIS_X);