Turn FilterEffectBuilder into a stack-allocated helper

third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp

 // Copyright 2015 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 "core/paint/SVGFilterPainter.h"
 
 #include "core/layout/svg/LayoutSVGResourceFilter.h"
 #include "core/paint/FilterEffectBuilder.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "platform/graphics/filters/SkiaImageFilterBuilder.h"
@@ skipping 69 matching lines @@
         // or we are in a cycle.
         if (filterData->m_state == FilterData::PaintingFilter)
             filterData->m_state = FilterData::PaintingFilterCycleDetected;
 
         if (filterData->m_state == FilterData::RecordingContent)
             filterData->m_state = FilterData::RecordingContentCycleDetected;
 
         return nullptr;
     }
 
-    const FloatRect referenceBox = object.objectBoundingBox();
     SVGFilterGraphNodeMap* nodeMap = SVGFilterGraphNodeMap::create();
-    Filter* filter = FilterEffectBuilder::buildReferenceFilter(toSVGFilterElement(*m_filter.element()), referenceBox, nullptr, nullptr, nullptr, 1, nodeMap);
+    FilterEffectBuilder builder(nullptr, object.objectBoundingBox(), 1);
+    Filter* filter = builder.buildReferenceFilter(toSVGFilterElement(*m_filter.element()), nullptr, nodeMap);
     if (!filter || !filter->lastEffect())
         return nullptr;
 
     IntRect sourceRegion = enclosingIntRect(intersection(filter->filterRegion(), object.strokeBoundingBox()));
     filter->getSourceGraphic()->setSourceRect(sourceRegion);
 
     FilterData* filterData = FilterData::create();
     filterData->filter = filter;
     filterData->nodeMap = nodeMap;
 
@@ skipping 25 matching lines @@
     if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, object, DisplayItem::kSVGFilter))
         return;
 
     FloatRect filterRegion = filterData ? filterData->filter->filterRegion() : FloatRect();
     LayoutObjectDrawingRecorder recorder(context, object, DisplayItem::kSVGFilter, filterRegion);
     if (filterData && filterData->m_state == FilterData::ReadyToPaint)
         paintFilteredContent(context, filterData);
 }
 
 } // namespace blink