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

samplecode/SamplePathClip.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
 #include "SkGradientShader.h"
@@ skipping 207 matching lines @@
         canvas->drawPath(path, p);
         canvas->restore();
 
         p.setStyle(SkPaint::kStroke_Style);
         p.setStrokeWidth(6);
 
         // Draw each of the "Edges" that survived the clipping
         // We use a layer, so we can PLUS the different edge-colors, showing where two edges
         // canceled each other out.
         canvas->saveLayer(nullptr, nullptr);
-        p.setXfermodeMode(SkXfermode::kPlus_Mode);
+        p.setBlendMode(SkBlendMode::kPlus);
         for (int i = 0; i < N; ++i) {
             const int j = (i + 1) % N;
             p.setColor(fEdgeColor[i]);
             draw_clipped_line(canvas, fClip, fPoly[i], fPoly[j], p);
         }
         canvas->restore();
     }
 
     class MyClick : public Click {
     public:
@@ skipping 70 matching lines @@
     bool onClick(Click* click) override {
         ((MyClick*)click)->handleMove();
         this->inval(nullptr);
         return false;
     }
 
 private:
     typedef SampleView INHERITED;
 };
 DEF_SAMPLE( return new EdgeClipView; )