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

samplecode/SampleRegion.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"
@@ skipping 62 matching lines @@
         { bounds.fRight, y }
     };
     const SkColor colors[] = { SK_ColorBLACK, SK_ColorBLACK, 0 };
 
     // pos[1] value is where we start to fade, relative to the width
     // of our pts[] array.
     const SkScalar pos[] = { 0, 0.9f, SK_Scalar1 };
 
     SkPaint p;
     p.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 3, SkShader::kClamp_TileMode));
-    p.setXfermodeMode(SkXfermode::kDstIn_Mode);
+    p.setBlendMode(SkBlendMode::kDstIn);
     canvas->drawRect(bounds, p);
 
     canvas->restore();
 }
 
 static void test_text(SkCanvas* canvas) {
     SkPaint paint;
     paint.setAntiAlias(true);
     paint.setTextSize(20);
 
@@ skipping 308 matching lines @@
 private:
     SkIRect    fBase, fRect;
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new RegionView; }
 static SkViewRegister reg(MyFactory);