IntersectionObserver: second cut.

third_party/WebKit/Source/core/dom/Element.h

Index: third_party/WebKit/Source/core/dom/Element.h
diff --git a/third_party/WebKit/Source/core/dom/Element.h b/third_party/WebKit/Source/core/dom/Element.h
index 461c72d39c1d354e8769c1dd9f3a3341dd96e390..ef6dfb69618d5909d10af8c37229a9bdfd1d8c40 100644
--- a/third_party/WebKit/Source/core/dom/Element.h
+++ b/third_party/WebKit/Source/core/dom/Element.h
@@ -56,6 +56,8 @@ class ElementRareData;
 class ElementShadow;
 class ExceptionState;
 class Image;
+class IntersectionObservation;
+class IntersectionObserver;
 class IntSize;
 class Locale;
 class MutableStylePropertySet;
@@ -537,6 +539,13 @@ public:
 
     SpellcheckAttributeState spellcheckAttributeState() const;
 
+    WeakPtrWillBeRawPtr<Element> createWeakPtr();
+
+    void addIntersectionObservation(IntersectionObservation&);
+    void removeIntersectionObservation(IntersectionObservation&);
+
+    bool computeIntersection(Element*, LayoutRect&, LayoutRect&, LayoutRect&);

[esprehn, 2015/12/12 00:14:12]

const, also const Element* hopefully.

[szager1, 2015/12/16 19:15:33]

This method has been refactored out.

+
 protected:
     Element(const QualifiedName& tagName, Document*, ConstructionType);
 
@@ -671,6 +680,9 @@ private:
 
     bool shouldInvalidateDistributionWhenAttributeChanged(ElementShadow*, const QualifiedName&, const AtomicString&);
 
+    bool computeElementIntersection(Element*, LayoutRect&, LayoutRect&);
+    Element* computeFrameIntersection(LayoutRect&, LayoutRect&);
+
     ElementRareData* elementRareData() const;
     ElementRareData& ensureElementRareData();