Restrict SVG filters to the filter bounds instead of an infinite rect

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

Index: third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp b/third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp
index 5f2a8384db38e90aa496d92e3e7bdb89ed141115..6ca6fe6b75e9649302e72e06a5b02de30cf674e8 100644
--- a/third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/SVGFilterPainter.cpp
@@ -129,8 +129,8 @@ void SVGFilterPainter::finishEffect(const LayoutObject& object, SVGFilterRecordi
     if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, object, DisplayItem::kSVGFilter))
         return;
 
-    // TODO(chrishtr): stop using an infinite rect, and instead bound the filter.
-    LayoutObjectDrawingRecorder recorder(context, object, DisplayItem::kSVGFilter, LayoutRect::infiniteIntRect());
+    FloatRect filterRegion = filterData ? filterData->filter->filterRegion() : FloatRect();
+    LayoutObjectDrawingRecorder recorder(context, object, DisplayItem::kSVGFilter, filterRegion);
     if (filterData && filterData->m_state == FilterData::ReadyToPaint)
         paintFilteredContent(context, filterData);
 }