GL_PALETTE4_RGBA8_OES   31 ppapi/lib/gl/include/GLES2/gl2ext.h #define GL_PALETTE4_RGBA8_OES                                   0x8B91
GL_PALETTE4_RGBA8_OES  187 third_party/khronos/GLES2/gl2ext.h #define GL_PALETTE4_RGBA8_OES             0x8B91