stop using SkXfermode -- use SkBlendMode instead

third_party/WebKit/Source/platform/graphics/paint/CompositingDisplayItem.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/paint/CompositingDisplayItem.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "public/platform/WebDisplayItemList.h"
 
 namespace blink {
 
 void BeginCompositingDisplayItem::replay(GraphicsContext& context) const {
   context.beginLayer(m_opacity, m_xferMode, m_hasBounds ? &m_bounds : nullptr,
                      m_colorFilter);
 }
 
 void BeginCompositingDisplayItem::appendToWebDisplayItemList(
     const IntRect& visualRect,
     WebDisplayItemList* list) const {
   SkRect bounds = m_bounds;
   list->appendCompositingItem(
-      m_opacity, (SkXfermode::Mode)m_xferMode, m_hasBounds ? &bounds : nullptr,
+      m_opacity, m_xferMode, m_hasBounds ? &bounds : nullptr,
       GraphicsContext::WebCoreColorFilterToSkiaColorFilter(m_colorFilter)
           .get());
 }
 
 #ifndef NDEBUG
 void BeginCompositingDisplayItem::dumpPropertiesAsDebugString(
     WTF::StringBuilder& stringBuilder) const {
   DisplayItem::dumpPropertiesAsDebugString(stringBuilder);
   stringBuilder.append(WTF::String::format(
       ", xferMode: %d, opacity: %f", static_cast<int>(m_xferMode), m_opacity));
   if (m_hasBounds)
     stringBuilder.append(
         WTF::String::format(", bounds: [%f, %f, %f, %f]",
                             m_bounds.location().x(), m_bounds.location().y(),
                             m_bounds.size().width(), m_bounds.size().height()));
 }
 #endif
 
 void EndCompositingDisplayItem::replay(GraphicsContext& context) const {
   context.endLayer();
 }
 
 void EndCompositingDisplayItem::appendToWebDisplayItemList(
     const IntRect& visualRect,
     WebDisplayItemList* list) const {
   list->appendEndCompositingItem();
 }
 
 }  // namespace blink