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

src/effects/SkOffsetImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkOffsetImageFilter.h"
 
 #include "SkCanvas.h"
@@ skipping 43 matching lines @@
             return nullptr;
         }
 
         SkCanvas* canvas = surf->getCanvas();
         SkASSERT(canvas);
 
         // TODO: it seems like this clear shouldn't be necessary (see skbug.com/5075)
         canvas->clear(0x0);
 
         SkPaint paint;
-        paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+        paint.setBlendMode(SkBlendMode::kSrc);
         canvas->translate(SkIntToScalar(srcOffset.fX - bounds.fLeft),
                           SkIntToScalar(srcOffset.fY - bounds.fTop));
 
         input->draw(canvas, vec.x(), vec.y(), &paint);
 
         offset->fX = bounds.fLeft;
         offset->fY = bounds.fTop;
         return surf->makeImageSnapshot();
     }
 }
@@ skipping 38 matching lines @@
 void SkOffsetImageFilter::toString(SkString* str) const {
     str->appendf("SkOffsetImageFilter: (");
     str->appendf("offset: (%f, %f) ", fOffset.fX, fOffset.fY);
     str->append("input: (");
     if (this->getInput(0)) {
         this->getInput(0)->toString(str);
     }
     str->append("))");
 }
 #endif