Fully deserialize the scope chain after parsing, not before

src/ast/ast.h

Index: src/ast/ast.h
diff --git a/src/ast/ast.h b/src/ast/ast.h
index d515c2f43b16858d0531e2b318e967e76e67de14..fff9254399d12a4c30b1e5f924be7624b96eb4e7 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -1176,10 +1176,6 @@ class SloppyBlockFunctionStatement final : public Statement {
  public:
   Statement* statement() const { return statement_; }
   void set_statement(Statement* statement) { statement_ = statement; }
-  VariableProxy* from() const { return from_; }
-  void set_from(VariableProxy* from) { from_ = from; }
-  VariableProxy* to() const { return to_; }
-  void set_to(VariableProxy* to) { to_ = to; }
   Scope* scope() const { return scope_; }
   SloppyBlockFunctionStatement* next() { return next_; }
   void set_next(SloppyBlockFunctionStatement* next) { next_ = next; }
@@ -1190,14 +1186,10 @@ class SloppyBlockFunctionStatement final : public Statement {
   SloppyBlockFunctionStatement(Statement* statement, Scope* scope)
       : Statement(kNoSourcePosition, kSloppyBlockFunctionStatement),
         statement_(statement),
-        from_(nullptr),
-        to_(nullptr),
         scope_(scope),
         next_(nullptr) {}
 
   Statement* statement_;
-  VariableProxy* from_;
-  VariableProxy* to_;
   Scope* const scope_;
   SloppyBlockFunctionStatement* next_;
 };