Add Node.getRootNode(options)

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

Index: third_party/WebKit/Source/core/dom/Node.cpp
diff --git a/third_party/WebKit/Source/core/dom/Node.cpp b/third_party/WebKit/Source/core/dom/Node.cpp
index 5bc034fe69b6bc638690d634e74029c7670b5ca6..19799caf7f6b9328cdebe2e9510d374021157c5b 100644
--- a/third_party/WebKit/Source/core/dom/Node.cpp
+++ b/third_party/WebKit/Source/core/dom/Node.cpp
@@ -44,6 +44,7 @@
 #include "core/dom/ElementRareData.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/dom/GetRootNodeOptions.h"
 #include "core/dom/LayoutTreeBuilderTraversal.h"
 #include "core/dom/NodeRareData.h"
 #include "core/dom/NodeTraversal.h"
@@ -381,6 +382,11 @@ Node& Node::treeRoot() const
     return const_cast<Node&>(*node);
 }
 
+Node* Node::getRootNode(const GetRootNodeOptions& options) const
+{
+    return (options.hasComposed() && options.composed()) ? &shadowIncludingRoot() : &treeRoot();
+}
+
 Node* Node::insertBefore(Node* newChild, Node* refChild, ExceptionState& exceptionState)
 {
     if (isContainerNode())