Revert[8] "replace SkXfermode obj with SkBlendMode enum in paints"

gm/dstreadshuffle.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 #include "SkBitmap.h"
 #include "SkPath.h"
 #include "SkRandom.h"
@@ skipping 141 matching lines @@
                 for (int width = 0; width <= 1; width++) {
                     for (int alpha = 0; alpha <= 2; alpha++) {
                         for (int r = 0; r <= 5; r++) {
                             SkColor color = GetColor(&random, alpha, style + width + alpha + r);
 
                             SkPaint p;
                             p.setAntiAlias(true);
                             p.setColor(color);
                             // In order to get some batching on the GPU backend we do 2 src over for
                             // each xfer mode which requires a dst read
-                            p.setXfermodeMode(r % 3 == 0 ? SkXfermode::kLighten_Mode :
-                                                           SkXfermode::kSrcOver_Mode);
+                            p.setBlendMode(r % 3 == 0 ? SkBlendMode::kLighten :
+                                                        SkBlendMode::kSrcOver);
                             SetStyle(&p, style, width);
                             canvas->save();
                             canvas->translate(x, y);
                             canvas->rotate((SkScalar)(r < 3 ? 10 : 0));
                             this->drawShape(canvas, &p, shapeType);
                             canvas->restore();
                             x += 8;
                         }
                     }
                 }
@@ skipping 13 matching lines @@
     static constexpr int kHeight = 400;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new DstReadShuffle; }
 static GMRegistry reg(MyFactory);
 
 }