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

Source/core/frame/LocalFrame.h

Index: Source/core/frame/LocalFrame.h
diff --git a/Source/core/frame/LocalFrame.h b/Source/core/frame/LocalFrame.h
index 759664a787014a871d3e75614f22c1b37bc97b32..327e5120df0801e7c47ae1daf1873137e54a49b4 100644
--- a/Source/core/frame/LocalFrame.h
+++ b/Source/core/frame/LocalFrame.h
@@ -126,6 +126,8 @@
 
     // ======== All public functions below this point are candidates to move out of LocalFrame into another class. ========
 
+        bool inScope(TreeScope*) const;
+
         // See GraphicsLayerClient.h for accepted flags.
         String layerTreeAsText(unsigned flags = 0) const;