Account for filter bounds for backgroundRect during PaintLayer painting

third_party/WebKit/Source/core/paint/PaintLayerClipper.h

Index: third_party/WebKit/Source/core/paint/PaintLayerClipper.h
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerClipper.h b/third_party/WebKit/Source/core/paint/PaintLayerClipper.h
index ddfc612bcffbf64b41f554ab2e654c15239ce4ec..780fd332cec310dce08ac8c84707edbe2f4fcb72 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerClipper.h
+++ b/third_party/WebKit/Source/core/paint/PaintLayerClipper.h
@@ -233,9 +233,11 @@ class CORE_EXPORT PaintLayerClipper {
       ClipRect& foregroundRect,
       const LayoutPoint* offsetFromRoot = 0) const;
 
-  void ALWAYS_INLINE
-  applyOverflowClipToBackgroundRectWithGeometryMapper(const ClipRectsContext&,
-                                                      ClipRect&) const;
+  // Applies a clip to the bounds of the visual overflow
+  // of m_layer, in the space of the rootLayer of the context.
+  void ALWAYS_INLINE applyVisualOverflowClipToBackgroundRectWithGeometryMapper(
+      const ClipRectsContext&,
+      ClipRect&) const;
 
   const PaintLayer& m_layer;
   GeometryMapper* m_geometryMapper;