Adding overscroll effect in recents list

Bug: 109828536
Change-Id: If2b65cfc2b7f14deb721436f7aa378c4a2c5c468
diff --git a/src/com/android/launcher3/LauncherScroller.java b/src/com/android/launcher3/LauncherScroller.java
index a9b4955..af87550 100644
--- a/src/com/android/launcher3/LauncherScroller.java
+++ b/src/com/android/launcher3/LauncherScroller.java
@@ -459,13 +459,13 @@
         return Math.log(INFLEXION * Math.abs(velocity) / (mFlingFriction * mPhysicalCoeff));
     }
 
-    private int getSplineFlingDuration(float velocity) {
+    public int getSplineFlingDuration(float velocity) {
         final double l = getSplineDeceleration(velocity);
         final double decelMinusOne = DECELERATION_RATE - 1.0;
         return (int) (1000.0 * Math.exp(l / decelMinusOne));
     }
 
-    private double getSplineFlingDistance(float velocity) {
+    public double getSplineFlingDistance(float velocity) {
         final double l = getSplineDeceleration(velocity);
         final double decelMinusOne = DECELERATION_RATE - 1.0;
         return mFlingFriction * mPhysicalCoeff * Math.exp(DECELERATION_RATE / decelMinusOne * l);