PreParsing inner functions: Fix declaration-only variables.

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index 792d2ee2d387f7c3bf9d870c7f442e32879f3ce7..ec946142e8d3c17637ff615efcc7fbee959cb8f8 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -172,6 +172,7 @@ class Scope: public ZoneObject {
   // allocated globally as a "ghost" variable. RemoveUnresolved removes
   // such a variable again if it was added; otherwise this is a no-op.
   bool RemoveUnresolved(VariableProxy* var);
+  bool RemoveUnresolved(const AstRawString* name);
 
   // Creates a new temporary variable in this scope's TemporaryScope.  The
   // name is only used for printing and cannot be used to find the variable.