OGLPlayer: use more assertions
OGLPlayer: use more assertions

Change-Id: I0a224a90a3e99d12809d40612b1e66d7c023aebc

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