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

gm/lcdoverlap.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 /*
  * Tests overlapping LCD text
@@ skipping 31 matching lines @@
         const char* text = "able was I ere I saw elba";
         paint.setAntiAlias(true);
         paint.setSubpixelText(true);
         paint.setLCDRenderText(true);
         sk_tool_utils::add_to_text_blob(&builder, text, paint, 0, 0);
         fBlob = builder.make();
     }
 
     SkISize onISize() override { return SkISize::Make(kWidth, kHeight); }
 
-    void drawTestCase(SkCanvas* canvas, SkScalar x, SkScalar y, SkXfermode::Mode mode,
-                      SkXfermode::Mode mode2) {
+    void drawTestCase(SkCanvas* canvas, SkScalar x, SkScalar y, SkBlendMode mode,
+                      SkBlendMode mode2) {
         const SkColor colors[] {
                 SK_ColorRED,
                 SK_ColorGREEN,
                 SK_ColorBLUE,
                 SK_ColorYELLOW,
                 SK_ColorCYAN,
                 SK_ColorMAGENTA,
         };
 
-        sk_sp<SkXfermode> xfermode(SkXfermode::Make(mode));
-        sk_sp<SkXfermode> xfermode2(SkXfermode::Make(mode2));
         for (size_t i = 0; i < SK_ARRAY_COUNT(colors); i++) {
             canvas->save();
             canvas->translate(x, y);
             canvas->rotate(360.0f / SK_ARRAY_COUNT(colors) * i);
             canvas->translate(-fBlob->bounds().width() / 2.0f + 0.5f, 0);
 
             SkPaint textPaint;
             textPaint.setColor(colors[i]);
-            textPaint.setXfermode(i % 2 == 0 ? xfermode : xfermode2);
+            textPaint.setBlendMode(i % 2 == 0 ? mode : mode2);
             canvas->drawTextBlob(fBlob, 0, 0, textPaint);
             canvas->restore();
         }
     }
 
     void onDraw(SkCanvas* canvas) override {
         SkScalar offsetX = kWidth / 4.0f;
         SkScalar offsetY = kHeight / 4.0f;
-        drawTestCase(canvas, offsetX, offsetY,  SkXfermode::kSrc_Mode, SkXfermode::kSrc_Mode);
-        drawTestCase(canvas, 3 * offsetX, offsetY,  SkXfermode::kSrcOver_Mode,
-                     SkXfermode::kSrcOver_Mode);
-        drawTestCase(canvas, offsetX, 3 * offsetY,  SkXfermode::kHardLight_Mode,
-                     SkXfermode::kLuminosity_Mode);
-        drawTestCase(canvas, 3 * offsetX, 3 * offsetY,  SkXfermode::kSrcOver_Mode,
-                     SkXfermode::kSrc_Mode);
+        drawTestCase(canvas, offsetX, offsetY,  SkBlendMode::kSrc, SkBlendMode::kSrc);
+        drawTestCase(canvas, 3 * offsetX, offsetY,  SkBlendMode::kSrcOver, SkBlendMode::kSrcOver);
+        drawTestCase(canvas, offsetX, 3 * offsetY,  SkBlendMode::kHardLight,
+                     SkBlendMode::kLuminosity);
+        drawTestCase(canvas, 3 * offsetX, 3 * offsetY,  SkBlendMode::kSrcOver, SkBlendMode::kSrc);
     }
 
 private:
     SkScalar fTextHeight;
     sk_sp<SkTextBlob> fBlob;
     typedef skiagm::GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM( return new LcdOverlapGM; )
 }