Revert "use pipeline for non-opt xfermodes"

This reverts commit e93cf97175d348ce1400762bdd8d9acabdd29766.

Reason for revert: unblock Chrome roll

Original change's description:
> use pipeline for non-opt xfermodes
> 
> Produces slightly different results for Hue, Saturation, Color, Luminosity,
> seemingly around the aa edging.
> 
> Bug: skia:
> Change-Id: I6364818c9788863e5fad6d14cad4797d073dbea3
> Reviewed-on: https://skia-review.googlesource.com/19554
> Reviewed-by: Mike Klein <mtklein@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=mtklein@google.com,fmalita@chromium.org,reed@google.com

Change-Id: Ib85a51753d21ce778fa5cfedd6b7d1b5b2b87096
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/19745
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/effects/SkLayerDrawLooper.cpp b/src/effects/SkLayerDrawLooper.cpp
index 7dff657c52..4fb629376e 100644
--- a/src/effects/SkLayerDrawLooper.cpp
+++ b/src/effects/SkLayerDrawLooper.cpp
@@ -54,8 +54,8 @@ static SkColor xferColor(SkColor src, SkColor dst, SkBlendMode mode) {
         default: {
             SkPMColor pmS = SkPreMultiplyColor(src);
             SkPMColor pmD = SkPreMultiplyColor(dst);
-            SkXfermode::Peek(mode)->xfer32(&pmD, &pmS, 1, nullptr);
-            return SkUnPreMultiply::PMColorToColor(pmD);
+            SkPMColor result = SkXfermode::GetProc(mode)(pmS, pmD);
+            return SkUnPreMultiply::PMColorToColor(result);
         }
     }
 }