Use intersection observer to control frame throttling

third_party/WebKit/Source/core/layout/svg/LayoutSVGModelObject.cpp

 /*
  * Copyright (c) 2009, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 }
 
 LayoutRect LayoutSVGModelObject::absoluteClippedOverflowRect() const {
   return SVGLayoutSupport::clippedOverflowRectForPaintInvalidation(*this,
                                                                    *view());
 }
 
 void LayoutSVGModelObject::mapAncestorToLocal(
     const LayoutBoxModelObject* ancestor,
     TransformState& transformState,
-    MapCoordinatesFlags) const {
-  SVGLayoutSupport::mapAncestorToLocal(*this, ancestor, transformState);
+    MapCoordinatesFlags flags) const {
+  SVGLayoutSupport::mapAncestorToLocal(*this, ancestor, transformState, flags);
 }
 
 const LayoutObject* LayoutSVGModelObject::pushMappingToContainer(
     const LayoutBoxModelObject* ancestorToStopAt,
     LayoutGeometryMap& geometryMap) const {
   return SVGLayoutSupport::pushMappingToContainer(this, ancestorToStopAt,
                                                   geometryMap);
 }
 
 void LayoutSVGModelObject::absoluteRects(
@@ skipping 63 matching lines @@
 // The SVG addOutlineRects() method adds rects in local coordinates so the
 // default absoluteElementBoundingBoxRect() returns incorrect values for SVG
 // objects. Overriding this method provides access to the absolute bounds.
 IntRect LayoutSVGModelObject::absoluteElementBoundingBoxRect() const {
   return localToAbsoluteQuad(
              FloatQuad(paintInvalidationRectInLocalSVGCoordinates()))
       .enclosingBoundingBox();
 }
 
 }  // namespace blink