GL_SAMPLE_COVERAGE_INVERT  212 ppapi/lib/gl/include/GLES2/gl2.h #define GL_SAMPLE_COVERAGE_INVERT         0x80AB
GL_SAMPLE_COVERAGE_INVERT  190 third_party/khronos/GLES2/gl2.h #define GL_SAMPLE_COVERAGE_INVERT         0x80AB