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

This reverts commit c245574ba3d0e2ade6c94b2812de3baa383bf4c4.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2396953002

TBR=

Review-Url: https://codereview.chromium.org/2396953002
diff --git a/src/utils/SkDumpCanvas.cpp b/src/utils/SkDumpCanvas.cpp
index fcb24d2..68bd13e 100644
--- a/src/utils/SkDumpCanvas.cpp
+++ b/src/utils/SkDumpCanvas.cpp
@@ -209,8 +209,8 @@
         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());
@@ -540,8 +540,10 @@
 
     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");