Move all fast-path paint invalidation mapping into PaintInvalidationState

third_party/WebKit/Source/core/dom/IntersectionObservation.cpp

 // Copyright 2016 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/dom/IntersectionObservation.h"
 
 #include "core/dom/ElementRareData.h"
 #include "core/dom/IntersectionObserver.h"
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBox.h"
@@ skipping 52 matching lines @@
 }
 
 void IntersectionObservation::clipToRoot(LayoutRect& rect, const LayoutRect& rootRect) const
 {
     // Map and clip rect into root element coordinates.
     // TODO(szager): the writing mode flipping needs a test.
     ASSERT(m_target);
     LayoutObject* rootLayoutObject = m_observer->rootLayoutObject();
     LayoutObject* targetLayoutObject = target()->layoutObject();
 
-    targetLayoutObject->mapToVisibleRectInAncestorSpace(toLayoutBoxModelObject(rootLayoutObject), rect, nullptr);
+    targetLayoutObject->mapToVisibleRectInAncestorSpace(toLayoutBoxModelObject(rootLayoutObject), rect);
     LayoutRect rootClipRect(rootRect);
     toLayoutBox(rootLayoutObject)->flipForWritingMode(rootClipRect);
     rect.intersect(rootClipRect);
 }
 
 static void mapRectUpToDocument(LayoutRect& rect, const LayoutObject& layoutObject, const Document& document)
 {
     FloatQuad mappedQuad = layoutObject.localToAbsoluteQuad(
         FloatQuad(FloatRect(rect)),
         UseTransforms | ApplyContainerFlip);
@@ skipping 139 matching lines @@
     m_observer.clear();
 }
 
 DEFINE_TRACE(IntersectionObservation)
 {
     visitor->trace(m_observer);
     visitor->trace(m_target);
 }
 
 } // namespace blink