GL_OES_texture_half_float_linear  834 ppapi/lib/gl/include/GLES2/gl2ext.h #define GL_OES_texture_half_float_linear 1
GL_OES_texture_half_float_linear  368 third_party/khronos/GLES2/gl2ext.h #define GL_OES_texture_half_float_linear 1