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

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBitmapCache.h"
 #include "SkCanvas.h"
@@ skipping 241 matching lines @@
                                 int srcX, int srcY, CachingHint) const {
     if (!raster_canvas_supports(dstInfo)) {
         return false;
     }
 
     SkBitmap bm;
     bm.installPixels(dstInfo, dstPixels, dstRowBytes);
     SkCanvas canvas(bm);
 
     SkPaint paint;
-    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+    paint.setBlendMode(SkBlendMode::kSrc);
     canvas.drawImage(this, -SkIntToScalar(srcX), -SkIntToScalar(srcY), &paint);
 
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 bool SkImage::readPixels(const SkPixmap& pmap, int srcX, int srcY, CachingHint chint) const {
     return this->readPixels(pmap.info(), pmap.writable_addr(), pmap.rowBytes(), srcX, srcY, chint);
 }
@@ skipping 242 matching lines @@
     SkASSERT(image);
     SkASSERT(ctx);
     as_IB(image)->onPinAsTexture(ctx);
 }
 
 void SkImage_unpinAsTexture(const SkImage* image, GrContext* ctx) {
     SkASSERT(image);
     SkASSERT(ctx);
     as_IB(image)->onUnpinAsTexture(ctx);
 }