Use SkLayerDrawLooper::Builder to construct SkLayerDrawLooper.

Source/core/rendering/RenderBoxModelObject.cpp

Index: Source/core/rendering/RenderBoxModelObject.cpp
diff --git a/Source/core/rendering/RenderBoxModelObject.cpp b/Source/core/rendering/RenderBoxModelObject.cpp
index bae01cbfebfa2248c829e08f2e9cd5a0a95509ad..8cf4f2238ad45d8e04120cec08314eef41f8e474 100644
--- a/Source/core/rendering/RenderBoxModelObject.cpp
+++ b/Source/core/rendering/RenderBoxModelObject.cpp
@@ -2512,10 +2512,10 @@ void RenderBoxModelObject::paintBoxShadow(const PaintInfo& info, const LayoutRec
             }
 
             // Draw only the shadow.
-            DrawLooper drawLooper;
-            drawLooper.addShadow(shadowOffset, shadowBlur, shadowColor,
+            DrawLooper::Builder drawLooperBuilder;
+            drawLooperBuilder.addShadow(shadowOffset, shadowBlur, shadowColor,
                 DrawLooper::ShadowRespectsTransforms, DrawLooper::ShadowIgnoresAlpha);
-            context->setDrawLooper(drawLooper);
+            context->setDrawLooper(*drawLooperBuilder.detachDrawLooper());
 
             if (hasBorderRadius) {
                 RoundedRect influenceRect(pixelSnappedIntRect(LayoutRect(shadowRect)), border.radii());