Merge "Don't enter overscroll when dragging fast scrollbar." into ub-launcher3-dorval-polish

am: 35005ef213

Change-Id: Ia48ce4ac048e9d40dab594428fd00b86e0782a2b

src/com/android/launcher3/allapps/AllAppsRecyclerView.java

@@ -495,7 +495,8 @@ public class AllAppsRecyclerView extends BaseRecyclerView {
         public boolean onDrag(float displacement, float velocity) {
             // We are in overscroll iff we are trying to drag further down when we're already at
             // the bottom of All Apps.
-            mIsInOverScroll = !canScrollVertically(1) && displacement < 0;
+            mIsInOverScroll = !canScrollVertically(1) && displacement < 0
+                    && !mScrollbar.isDraggingThumb();
 
             if (mIsInOverScroll) {
                 displacement = getDampedOverScroll(displacement);