Log correct depth for the created CGBitmapContext
Log correct depth for the created CGBitmapContext

Change-Id: Icbcc4027d3fd9cb195c5fc6fd50f1ffaa7ce0d28

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