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

src/utils/SkDumpCanvas.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 "SkData.h"
 #include "SkDumpCanvas.h"
 #include "SkPatchUtils.h"
@@ skipping 191 matching lines @@
     str.printf("saveLayer(0x%X)", rec.fSaveLayerFlags);
     if (rec.fBounds) {
         str.append(" bounds");
         toString(*rec.fBounds, &str);
     }
     const SkPaint* paint = rec.fPaint;
     if (paint) {
         if (paint->getAlpha() != 0xFF) {
             str.appendf(" alpha:0x%02X", paint->getAlpha());
         }
-        if (paint->getXfermode()) {
-            str.appendf(" xfermode:%p", paint->getXfermode());
+        if (!paint->isSrcOver()) {
+            str.appendf(" blendmode:%d", paint->getBlendMode());
         }
     }
     this->dump(kSave_Verb, paint, str.c_str());
     return this->INHERITED::getSaveLayerStrategy(rec);
 }
 
 void SkDumpCanvas::willRestore() {
     this->dump(kRestore_Verb, nullptr, "restore");
     this->INHERITED::willRestore();
 }
@@ skipping 309 matching lines @@
 #if 0
         tab.append("\t");
 #else
         tab.append("    ");   // tabs are often too wide to be useful
 #endif
     }
     msg.printf("%s%s", tab.c_str(), str);
 
     if (p) {
         msg.appendf(" color:0x%08X flags:%X", p->getColor(), p->getFlags());
+        if (!p->isSrcOver()) {
+            msg.appendf(" blendmode:%d", p->getBlendMode());
+        }
         appendFlattenable(&msg, p->getShader(), "shader");
-        appendFlattenable(&msg, p->getXfermode(), "xfermode");
         appendFlattenable(&msg, p->getPathEffect(), "pathEffect");
         appendFlattenable(&msg, p->getMaskFilter(), "maskFilter");
         appendFlattenable(&msg, p->getPathEffect(), "pathEffect");
         appendFlattenable(&msg, p->getColorFilter(), "filter");
 
         if (SkDumpCanvas::kDrawText_Verb == verb) {
             msg.appendf(" textSize:%g", SkScalarToFloat(p->getTextSize()));
             appendPtr(&msg, p->getTypeface(), "typeface");
         }
 
         if (p->getStyle() != SkPaint::kFill_Style) {
             msg.appendf(" strokeWidth:%g", SkScalarToFloat(p->getStrokeWidth()));
         }
     }
 
     fProc(msg.c_str(), fRefcon);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static void dumpToDebugf(const char text[], void*) {
     SkDebugf("%s\n", text);
 }
 
 SkDebugfDumper::SkDebugfDumper() : INHERITED(dumpToDebugf, nullptr) {}