public static void deleteTabState(File directory,int tabId,boolean encrypted){
  File file=getTabStateFile(directory,tabId,encrypted);
  if (file.exists() && !file.delete())   Log.e(TAG,"Failed to delete TabState: " + file);
}

public static void deleteTabState ( File directory , int tabId , boolean encrypted ) { File file = getTabStateFile ( directory , tabId , encrypted ) ; if ( file . exists ( ) && ! file . delete ( ) ) Log . e ( TAG , "Failed to delete TabState: " + file ) ; }
deletes the tabstate corresponding to the given tab .
