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

samplecode/SampleColorFilter.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 "sk_tool_utils.h"
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 82 matching lines @@
     r.set(0, 0, SkIntToScalar(n), SkIntToScalar(n));
     r.inset(SK_Scalar1, SK_Scalar1);
 
     SkPaint paint;
     paint.setAntiAlias(true);
 
     paint.setColor(SK_ColorRED);
     canvas.drawOval(r, paint);
 
     r.inset(SK_Scalar1*n/4, SK_Scalar1*n/4);
-    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+    paint.setBlendMode(SkBlendMode::kSrc);
     paint.setColor(0x800000FF);
     canvas.drawOval(r, paint);
 
     return bitmap;
 }
 
 class ColorFilterView : public SampleView {
     SkBitmap fBitmap;
     sk_sp<SkShader> fShader;
     enum {
@@ skipping 76 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new ColorFilterView; }
 static SkViewRegister reg(MyFactory);