Implement closed shadow adjustment for Element.offsetParent

third_party/WebKit/Source/core/html/HTMLElement.h

Index: third_party/WebKit/Source/core/html/HTMLElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLElement.h b/third_party/WebKit/Source/core/html/HTMLElement.h
index 3319af8725dc1bab664a7ff28eb1e47474d933bb..820c43d20400b6c330cf179366e76b38bc9d1a79 100644
--- a/third_party/WebKit/Source/core/html/HTMLElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLElement.h
@@ -103,6 +103,13 @@ public:
 
     virtual String altText() const { return String(); }
 
+    int offsetLeftForBinding();
+    int offsetTopForBinding();
+    int offsetWidthForBinding();
+    int offsetHeightForBinding();
+
+    Element* unclosedOffsetParent();
+
 protected:
     HTMLElement(const QualifiedName& tagName, Document&, ConstructionType);