Simplify "timer" code and add OS X implementation
Simplify "timer" code and add OS X implementation

Change-Id: Id728dc3b422c76fcb6c0a1185caae6f05b9ca245

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