Cleanups needed for this-scoping in arrow functions

src/scopes.h

Index: src/scopes.h
diff --git a/src/scopes.h b/src/scopes.h
index 44434fa3622091d19d6b9e511e881883fb0b802f..1197df9a20e4bfa384bc016f657356b8daa2f3ae 100644
--- a/src/scopes.h
+++ b/src/scopes.h
@@ -22,8 +22,7 @@ class VariableMap: public ZoneHashMap {
   virtual ~VariableMap();
 
   Variable* Declare(Scope* scope, const AstRawString* name, VariableMode mode,
-                    bool is_valid_lhs, Variable::Kind kind,
-                    InitializationFlag initialization_flag,
+                    Variable::Kind kind, InitializationFlag initialization_flag,
                     MaybeAssignedFlag maybe_assigned_flag = kNotAssigned);
 
   Variable* Lookup(const AstRawString* name);
@@ -149,8 +148,8 @@ class Scope: public ZoneObject {
     // the same name because they may be removed selectively via
     // RemoveUnresolved().
     DCHECK(!already_resolved());
-    VariableProxy* proxy =
-        factory->NewVariableProxy(name, false, start_position, end_position);
+    VariableProxy* proxy = factory->NewVariableProxy(
+        name, Variable::NORMAL, start_position, end_position);
     unresolved_.Add(proxy, zone_);
     return proxy;
   }