Reland of Preparse inner functions (new try)

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index f9d3fdefd0ff50581cbb47b03f92ee3e311cf6fc..c5fcd6e7d2324f2ddab8225262d0f569c3458820 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -342,8 +342,9 @@
   int StackLocalCount() const;
   int ContextLocalCount() const;
 
-  // Determine if we can parse a function literal in this scope lazily.
-  bool AllowsLazyParsing() const;
+  // Determine if we can parse a function literal in this scope lazily without
+  // caring about the unresolved variables within.
+  bool AllowsLazyParsingWithoutUnresolvedVariables() const;
 
   // The number of contexts between this and scope; zero if this == scope.
   int ContextChainLength(Scope* scope) const;
@@ -538,6 +539,7 @@
   // list along the way, so full resolution cannot be done afterwards.
   // If a ParseInfo* is passed, non-free variables will be resolved.
   VariableProxy* FetchFreeVariables(DeclarationScope* max_outer_scope,
+                                    bool try_to_resolve = true,
                                     ParseInfo* info = nullptr,
                                     VariableProxy* stack = nullptr);