Allocate block-scoped global bindings to global context.

src/variables.h

Index: src/variables.h
diff --git a/src/variables.h b/src/variables.h
index e5aee2d3e615189d54c126ddac7902a9d4320ecd..c49bab95da2a7aa9cfab87432bd4089ce2b3349f 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -118,6 +118,7 @@ class Variable: public ZoneObject {
   bool IsStackAllocated() const { return IsParameter() || IsStackLocal(); }
   bool IsContextSlot() const { return location_ == CONTEXT; }
   bool IsLookupSlot() const { return location_ == LOOKUP; }
+  bool IsGlobalObjectProperty() const;
 
   bool is_dynamic() const {
     return (mode_ == DYNAMIC ||
@@ -132,7 +133,6 @@ class Variable: public ZoneObject {
     return initialization_flag_ == kNeedsInitialization;
   }
 
-  bool is_global() const;
   bool is_this() const { return kind_ == THIS; }
   bool is_arguments() const { return kind_ == ARGUMENTS; }