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/tests/RecordOptsTest.cpp b/tests/RecordOptsTest.cpp
index 4567a01..b7c9ae9 100644
--- a/tests/RecordOptsTest.cpp
+++ b/tests/RecordOptsTest.cpp
@@ -140,7 +140,7 @@
     SkPaint alphaOnlyLayerPaint, translucentLayerPaint, xfermodeLayerPaint;
     alphaOnlyLayerPaint.setColor(0x03000000);  // Only alpha.
     translucentLayerPaint.setColor(0x03040506);  // Not only alpha.
-    xfermodeLayerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);  // Any effect will do.
+    xfermodeLayerPaint.setBlendMode(SkBlendMode::kDstIn);  // Any effect will do.
 
     SkPaint opaqueDrawPaint, translucentDrawPaint;
     opaqueDrawPaint.setColor(0xFF020202);  // Opaque.
@@ -222,10 +222,10 @@
     SkPaint translucentLayerPaint;
     translucentLayerPaint.setColor(0x03040506);  // Not only alpha.
     SkPaint xfermodePaint;
-    xfermodePaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
+    xfermodePaint.setBlendMode(SkBlendMode::kDstIn);
     SkPaint colorFilterPaint;
     colorFilterPaint.setColorFilter(
-        SkColorFilter::MakeModeFilter(SK_ColorLTGRAY, SkXfermode::kSrcIn_Mode));
+        SkColorFilter::MakeModeFilter(SK_ColorLTGRAY, SkBlendMode::kSrcIn));
 
     SkPaint opaqueFilterLayerPaint;
     opaqueFilterLayerPaint.setColor(0xFF020202);  // Opaque.
@@ -353,7 +353,7 @@
 
     if (doLayer) {
         canvas->saveLayer(nullptr, nullptr);
-        p.setXfermodeMode(SkXfermode::kSrc_Mode);
+        p.setBlendMode(SkBlendMode::kSrc);
         canvas->drawPaint(p);
         canvas->restore();
     } else {