question: @ Override public void onTabClosing ( long time , int id ) { reset ( ) ; forceAnimationToFinish ( ) ; TabModel model = mTabModelSelector . getModelForTabId ( id ) ; if ( model != null ) { mClosedTab = createLayoutTab ( id , model . isIncognito ( ) , NO_CLOSE_BUTTON , NO_TITLE ) ; mClosedTab . setBorderAlpha ( 0.0f ) ; mLayoutTabs = new LayoutTab [ ] { mClosedTab } ; updateCacheVisibleIds ( new LinkedList < Integer > ( Arrays . asList ( id ) ) ) ; } else { mLayoutTabs = null ; mClosedTab = null ; } super . onTabClosing ( time , id ) ; }
target:  Set up for the tab closing animation