harmony_scoping: Implement lexical bindings at top level

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index d12896fb94d8d1aa2b0dce522c819f59dd3905e3..b7887cf7d7c5bae0c5d2d5ed171eac0f2e1bba35 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -87,6 +87,7 @@
 //         - JSFunctionResultCache
 //         - ScopeInfo
 //         - TransitionArray
+//         - GlobalContextTable
 //       - FixedDoubleArray
 //       - ExternalArray
 //         - ExternalUint8ClampedArray
@@ -943,6 +944,7 @@ template <class C> inline bool Is(Object* obj);
   V(FixedDoubleArray)              \
   V(ConstantPoolArray)             \
   V(Context)                       \
+  V(GlobalContextTable)            \
   V(NativeContext)                 \
   V(ScopeInfo)                     \
   V(JSFunction)                    \
@@ -7534,6 +7536,9 @@ class GlobalObject: public JSObject {
 
   DECLARE_CAST(GlobalObject)
 
+  static void InvalidatePropertyCell(Handle<GlobalObject> object,
+                                     Handle<Name> name);
+
   // Layout description.
   static const int kBuiltinsOffset = JSObject::kHeaderSize;
   static const int kNativeContextOffset = kBuiltinsOffset + kPointerSize;