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

dm/DMSrcSink.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DMSrcSink.h"
 #include "Resources.h"
 #include "SkAndroidCodec.h"
@@ skipping 1436 matching lines @@
     upright.setSkewX(SkScalarSignAsScalar(inverse.getSkewX()));
     upright.setSkewY(SkScalarSignAsScalar(inverse.getSkewY()));
 
     SkBitmap uprighted;
     SkISize size = auto_compute_translate(&upright, bitmap->width(), bitmap->height());
     uprighted.allocPixels(bitmap->info().makeWH(size.width(), size.height()));
 
     SkCanvas canvas(uprighted);
     canvas.concat(upright);
     SkPaint paint;
-    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+    paint.setBlendMode(SkBlendMode::kSrc);
     canvas.drawBitmap(*bitmap, 0, 0, &paint);
 
     *bitmap = uprighted;
     bitmap->lockPixels();
     return "";
 }
 
 /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
 
 Error ViaSerialization::draw(
@@ skipping 240 matching lines @@
         Error err = src.draw(&rec);
         if (!err.isEmpty()) {
             return err;
         }
         dl->draw(canvas);
         return check_against_reference(bitmap, src, fSink);
     });
 }
 
 }  // namespace DM