Add support for [PutForwards] IDL extended attribute

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 262c1f396352a232cc05b5c253d1166ee6530ba7..8d9b100ef95427b73eac4fbb64329e322b96b320 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -679,6 +679,14 @@ bool Document::hasManifest() const
     return documentElement() && isHTMLHtmlElement(documentElement()) && documentElement()->hasAttribute(manifestAttr);
 }
 
+Location* Document::location() const
+{
+    if (!frame())
+        return 0;
+
+    return domWindow()->location();
+}
+
 void Document::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 {
     ContainerNode::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);