--- chromium-55.0.2883.75/third_party/skia/src/opts/SkRasterPipeline_opts.h.bak	2016-12-02 00:03:14.000000000 +0100
+++ chromium-55.0.2883.75/third_party/skia/src/opts/SkRasterPipeline_opts.h	2016-12-09 01:09:11.800000000 +0100
@@ -39,9 +39,6 @@
 static inline void SK_VECTORCALL stage_1_3(SkRasterPipeline::Stage* st, size_t x, size_t tail,
                                            Sk4f  r, Sk4f  g, Sk4f  b, Sk4f  a,
                                            Sk4f dr, Sk4f dg, Sk4f db, Sk4f da) {
-#if defined(__clang__)
-    __builtin_assume(tail > 0);  // This flourish lets Clang compile away any tail==0 code.
-#endif
     kernel(st->ctx<void*>(), x,tail, r,g,b,a, dr,dg,db,da);
     if (kCallNext) {
         st->next(x,tail, r,g,b,a, dr,dg,db,da);