broadcast change if removing NULL page
broadcast change if removing NULL page

Change-Id: Iacf5e9cc509e29aaf5dd1321407c0de9db7677f3

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core