[debugger] make step positions for for-of compatible with interpreter.

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index f971cf7661ceae42c3007c19300e11a1d9c7cbf2..dab2f92c0ae032545aa75b53df60362168c4ee94 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -939,10 +939,11 @@ class Parser : public ParserBase<ParserTraits> {
 
   // Initialize the components of a for-in / for-of statement.
   void InitializeForEachStatement(ForEachStatement* stmt, Expression* each,
-                                  Expression* subject, Statement* body);
+                                  Expression* subject, Statement* body,
+                                  int each_keyword_pos);
   void InitializeForOfStatement(ForOfStatement* stmt, Expression* each,
                                 Expression* iterable, Statement* body,
-                                int iterable_pos);
+                                int next_result_pos = RelocInfo::kNoPosition);
   Statement* DesugarLexicalBindingsInForStatement(
       Scope* inner_scope, VariableMode mode,
       ZoneList<const AstRawString*>* names, ForStatement* loop, Statement* init,