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

tests/RecordDrawTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #include "RecordTestUtils.h"
 
@@ skipping 222 matching lines @@
 }
 
 // When a saveLayer provides an explicit bound and has a complex paint (e.g., one that
 // affects transparent black), that bound should serve to shrink the area of the required
 // backing store.
 DEF_TEST(RecordDraw_SaveLayerBoundsAffectsClipBounds, r) {
     SkRecord record;
     SkRecorder recorder(&record, 50, 50);
 
     SkPaint p;
-    p.setXfermodeMode(SkXfermode::kSrc_Mode);
+    p.setBlendMode(SkBlendMode::kSrc);
 
     SkRect layerBounds = SkRect::MakeLTRB(10, 10, 40, 40);
     recorder.saveLayer(&layerBounds, &p);
     recorder.drawRect(SkRect::MakeLTRB(20, 20, 30, 30), SkPaint());
     recorder.restore();
 
     SkAutoTMalloc<SkRect> bounds(record.count());
     SkRecordFillBounds(SkRect::MakeWH(50, 50), record, bounds);
     if (!SkCanvas::Internal_Private_GetIgnoreSaveLayerBounds()) {
         REPORTER_ASSERT(r, sloppy_rect_eq(bounds[0], SkRect::MakeLTRB(10, 10, 40, 40)));
@@ skipping 44 matching lines @@
 
     {
         SkRecord record;
         SkRecorder recorder(&record, 10, 10);
         recorder.drawImageRect(image, SkRect::MakeWH(10, 10), nullptr);
         SkRecordDraw(record, &canvas, nullptr, nullptr, 0, nullptr, 0);
     }
     REPORTER_ASSERT(r, canvas.fDrawImageRectCalled);
 
 }