Adding the 'filter' context attribute to 2D canvas

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 35816c7fce8fc8f7916048454bae7897b8e2df9d..1e334f16e14d41fb5713fab74698db4f1f308f1a 100644
--- a/Source/core/paint/DeprecatedPaintLayer.cpp
+++ b/Source/core/paint/DeprecatedPaintLayer.cpp
@@ -2620,7 +2620,7 @@ FilterOperations DeprecatedPaintLayer::computeFilterOperations(const ComputedSty
             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(), toElement(enclosingElement()), referenceFilter->sourceGraphic(),
                 referenceOperation));
             referenceOperation.setFilter(referenceFilter.release());
         }
@@ -2662,7 +2662,8 @@ void DeprecatedPaintLayer::updateOrRemoveFilterEffectBuilder()
 
     // If the filter fails to build, remove it from the layer. It will still attempt to
     // go through regular processing (e.g. compositing), but never apply anything.
-    if (!filterInfo->builder()->build(layoutObject(), computeFilterOperations(layoutObject()->styleRef())))
+    float zoom = layoutObject()->style() ? layoutObject()->style()->effectiveZoom() : 1.0f;
+    if (!filterInfo->builder()->build(toElement(enclosingElement()), computeFilterOperations(layoutObject()->styleRef()), zoom))
         filterInfo->setBuilder(nullptr);
 }