Replace setCompositeOperation(CompositeOperator, WebBlendMode) with setCompositeOperation(SkXfermod…

Source/core/paint/ViewPainter.cpp

Index: Source/core/paint/ViewPainter.cpp
diff --git a/Source/core/paint/ViewPainter.cpp b/Source/core/paint/ViewPainter.cpp
index 02114ae5c92768e5635b4fc3a439b1362d10f9e8..40c13b323b2f6fa4d5fc14ac13c802ac610a2099 100644
--- a/Source/core/paint/ViewPainter.cpp
+++ b/Source/core/paint/ViewPainter.cpp
@@ -75,10 +75,10 @@ void ViewPainter::paintBoxDecorationBackground(const PaintInfo& paintInfo)
     if (!m_renderView.frameView()->isTransparent()) {
         Color baseColor = m_renderView.frameView()->baseBackgroundColor();
         if (baseColor.alpha()) {
-            CompositeOperator previousOperator = paintInfo.context->compositeOperation();
-            paintInfo.context->setCompositeOperation(CompositeCopy);
+            SkXfermode::Mode previousOperation = paintInfo.context->compositeOperation();
+            paintInfo.context->setCompositeOperation(SkXfermode::kSrc_Mode);
             paintInfo.context->fillRect(paintInfo.rect, baseColor);
-            paintInfo.context->setCompositeOperation(previousOperator);
+            paintInfo.context->setCompositeOperation(previousOperation);
         } else {
             paintInfo.context->clearRect(paintInfo.rect);
         }