Class android.support.v7.widget.RecyclerView

Removed interface android.support.v4.view.NestedScrollingChild.
Added interface android.support.v4.view.NestedScrollingChild2.

Added Methods
boolean dispatchNestedPreScroll(int, int, int[], int[], int)  
boolean dispatchNestedScroll(int, int, int, int, int[], int)  
boolean hasNestedScrollingParent(int)  
boolean startNestedScroll(int, int)  
void stopNestedScroll(int)