Update Blink to use the tree scope info on WebFrame for scoping checks.

Source/core/frame/LocalFrame.cpp

Index: Source/core/frame/LocalFrame.cpp
diff --git a/Source/core/frame/LocalFrame.cpp b/Source/core/frame/LocalFrame.cpp
index b3010ce4c8a6ba0c95bf9042a085ea3818b86d15..2417e620887fbacb9c14128f7992983558fb301c 100644
--- a/Source/core/frame/LocalFrame.cpp
+++ b/Source/core/frame/LocalFrame.cpp
@@ -409,19 +409,6 @@ LocalFrame* LocalFrame::localFrameRoot()
     return curFrame;
 }
 
-bool LocalFrame::inScope(TreeScope* scope) const
-{
-    ASSERT(scope);
-    Document* doc = document();
-    if (!doc)
-        return false;
-    // FIXME: This check is broken in for OOPI.
-    HTMLFrameOwnerElement* owner = doc->ownerElement();
-    if (!owner)
-        return false;
-    return owner->treeScope() == scope;
-}
-
 String LocalFrame::layerTreeAsText(LayerTreeFlags flags) const
 {
     TextStream textStream;