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

src/core/SkGpuBlurUtils.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGpuBlurUtils.h"
 
 #include "SkRect.h"
@@ skipping 62 matching lines @@
                                  Gr1DKernelEffect::Direction direction,
                                  int radius,
                                  float sigma,
                                  bool useBounds,
                                  float bounds[2]) {
     GrPaint paint;
     paint.setGammaCorrect(drawContext->isGammaCorrect());
     sk_sp<GrFragmentProcessor> conv(GrConvolutionEffect::MakeGaussian(
         texture, direction, radius, sigma, useBounds, bounds));
     paint.addColorFragmentProcessor(std::move(conv));
-    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+    paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
     SkMatrix localMatrix = SkMatrix::MakeTrans(-SkIntToScalar(srcOffset.x()),
                                                -SkIntToScalar(srcOffset.y()));
     drawContext->fillRectWithLocalMatrix(clip, paint, SkMatrix::I(),
                                          SkRect::Make(dstRect), localMatrix);
 }
 
 static void convolve_gaussian_2d(GrDrawContext* drawContext,
                                  const GrClip& clip,
                                  const SkIRect& dstRect,
                                  const SkIPoint& srcOffset,
                                  GrTexture* texture,
                                  int radiusX,
                                  int radiusY,
                                  SkScalar sigmaX,
                                  SkScalar sigmaY,
                                  const SkIRect* srcBounds) {
     SkMatrix localMatrix = SkMatrix::MakeTrans(-SkIntToScalar(srcOffset.x()),
                                                -SkIntToScalar(srcOffset.y()));
     SkISize size = SkISize::Make(2 * radiusX + 1,  2 * radiusY + 1);
     SkIPoint kernelOffset = SkIPoint::Make(radiusX, radiusY);
     GrPaint paint;
     paint.setGammaCorrect(drawContext->isGammaCorrect());
     SkIRect bounds = srcBounds ? *srcBounds : SkIRect::EmptyIRect();
 
     sk_sp<GrFragmentProcessor> conv(GrMatrixConvolutionEffect::MakeGaussian(
             texture, bounds, size, 1.0, 0.0, kernelOffset,
             srcBounds ? GrTextureDomain::kDecal_Mode : GrTextureDomain::kIgnore_Mode,
             true, sigmaX, sigmaY));
     paint.addColorFragmentProcessor(std::move(conv));
-    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+    paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
     drawContext->fillRectWithLocalMatrix(clip, paint, SkMatrix::I(), 
                                          SkRect::Make(dstRect), localMatrix);
 }
 
 static void convolve_gaussian(GrDrawContext* drawContext,
                               const GrClip& clip,
                               const SkIRect& srcRect,
                               GrTexture* texture,
                               Gr1DKernelEffect::Direction direction,
                               int radius,
@@ skipping 154 matching lines @@
                                                         domain,
                                                         GrTextureDomain::kDecal_Mode,
                                                         GrTextureParams::kBilerp_FilterMode));
             paint.addColorFragmentProcessor(std::move(fp));
             srcRect.offset(-srcOffset);
             srcOffset.set(0, 0);
         } else {
             GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
             paint.addColorTextureProcessor(srcTexture.get(), nullptr, matrix, params);
         }
-        paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+        paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
         shrink_irect_by_2(&dstRect, i < scaleFactorX, i < scaleFactorY);
 
         dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
                                        SkRect::Make(dstRect), SkRect::Make(srcRect));
 
         srcDrawContext = dstDrawContext;
         srcRect = dstRect;
         srcTexture = srcDrawContext->asTexture();
         dstDrawContext.swap(tmpDrawContext);
         localSrcBounds = srcRect;
@@ skipping 55 matching lines @@
 
         SkMatrix matrix;
         matrix.setIDiv(srcDrawContext->width(), srcDrawContext->height());
 
         GrPaint paint;
         paint.setGammaCorrect(dstDrawContext->isGammaCorrect());
         // FIXME:  this should be mitchell, not bilinear.
         GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
         sk_sp<GrTexture> tex(srcDrawContext->asTexture());
         paint.addColorTextureProcessor(tex.get(), nullptr, matrix, params);
-        paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
+        paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
 
         SkIRect dstRect(srcRect);
         scale_irect(&dstRect, scaleFactorX, scaleFactorY);
 
         dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
                                        SkRect::Make(dstRect), SkRect::Make(srcRect));
 
         srcDrawContext = dstDrawContext;
         srcRect = dstRect;
         dstDrawContext.swap(tmpDrawContext);
     }
 
     return srcDrawContext;
 }
 
 }
 
 #endif