[modules] Disable HTML-like comments

src/parsing/scanner.h

Index: src/parsing/scanner.h
diff --git a/src/parsing/scanner.h b/src/parsing/scanner.h
index 0acc7ab019a1c7e033ec9160d905990b4419b1bf..a63d72f6ba378200e882ff30457fa5abc9bef67a 100644
--- a/src/parsing/scanner.h
+++ b/src/parsing/scanner.h
@@ -474,6 +474,8 @@ class Scanner {
 
   bool FoundHtmlComment() const { return found_html_comment_; }
 
+  void set_module(bool module) { module_ = module; }
+
 #define DECLARE_ACCESSORS(name)                                \
   inline bool allow_##name() const { return allow_##name##_; } \
   inline void set_allow_##name(bool allow) { allow_##name##_ = allow; }
@@ -804,6 +806,9 @@ class Scanner {
   // Whether this scanner encountered an HTML comment.
   bool found_html_comment_;
 
+  // Whether this scanner is currently scanning ECMAScript module code
+  bool module_;
+
   bool allow_harmony_exponentiation_operator_;
 
   MessageTemplate::Template scanner_error_;