public final void setFriction(float friction) {
        mDeceleration = computeDeceleration(friction);
    }
The amount of friction applied to flings. The default value
is {@link android.view.ViewConfiguration#getScrollFriction}.

@param friction A scalar dimension-less value representing the coefficient of
        friction.
menudrawer/src/net/simonvt/menudrawer/Scroller.java