Cleanup color space resolution for ReferenceFilterBuilder

Source/core/paint/DeprecatedPaintLayer.cpp

Index: Source/core/paint/DeprecatedPaintLayer.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayer.cpp b/Source/core/paint/DeprecatedPaintLayer.cpp
index 79084f08573488803d5507f9feead7c864e1c9ec..c87a326647f966479e7fcd27c90590960f505b98 100644
--- a/Source/core/paint/DeprecatedPaintLayer.cpp
+++ b/Source/core/paint/DeprecatedPaintLayer.cpp
@@ -2833,12 +2833,12 @@ FilterOperations DeprecatedPaintLayer::computeFilterOperations(const ComputedSty
             FilterOperation* filterOperation = filters.operations().at(i).get();
             if (filterOperation->type() != FilterOperation::REFERENCE)
                 continue;
-            ReferenceFilterOperation* referenceOperation = toReferenceFilterOperation(filterOperation);
+            ReferenceFilterOperation& referenceOperation = toReferenceFilterOperation(*filterOperation);
             // FIXME: Cache the ReferenceFilter if it didn't change.
             RefPtrWillBeRawPtr<ReferenceFilter> referenceFilter = ReferenceFilter::create(style.effectiveZoom());
-            referenceFilter->setLastEffect(ReferenceFilterBuilder::build(referenceFilter.get(), layoutObject(), referenceFilter->sourceGraphic(),
+            referenceFilter->setLastEffect(ReferenceFilterBuilder::build(referenceFilter.get(), *layoutObject(), referenceFilter->sourceGraphic(),
                 referenceOperation));
-            referenceOperation->setFilter(referenceFilter.release());
+            referenceOperation.setFilter(referenceFilter.release());
         }
     }