GL_STENCIL_BACK_FUNC  182 ppapi/lib/gl/include/GLES2/gl2.h #define GL_STENCIL_BACK_FUNC              0x8800
GL_STENCIL_BACK_FUNC  162 third_party/khronos/GLES2/gl2.h #define GL_STENCIL_BACK_FUNC              0x8800