GL_COVERAGE_ALL_FRAGMENTS_NV  492 ppapi/lib/gl/include/GLES2/gl2ext.h #define GL_COVERAGE_ALL_FRAGMENTS_NV                            0x8ED5
GL_COVERAGE_ALL_FRAGMENTS_NV 1222 third_party/khronos/GLES2/gl2ext.h #define GL_COVERAGE_ALL_FRAGMENTS_NV      0x8ED5