Support for global var shortcuts in script contexts.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 291e5b01d9fa3045666c8e4f1600f7ade507401a..f6ee35869c29f7a7eb6f836d34f03a89503cd5ad 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -881,6 +881,11 @@ enum InitializationFlag {
 enum MaybeAssignedFlag { kNotAssigned, kMaybeAssigned };
 
 
+// This flag defines whether the context slot belongs to a variable of
+// this context or the context slot is a shortcut to a global property cell.
+enum class ContextSlotKindFlag { kLocal, kGlobal };

[Toon Verwaest, 2015/07/01 09:28:55]

What about changing Variable::Location to have a GLOBAL or so, rather than
having CONTEXT that is kLocal or kGlobal?

[Igor Sheludko, 2015/07/02 16:50:13]

Done.

+
+
 // Serialized in PreparseData, so numeric values should not be changed.
 enum ParseErrorType { kSyntaxError = 0, kReferenceError = 1 };