Parser: Make skipping HTML comments optional.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 759e1c266671acb72e40898efdefd5a5c9986ed8..4269700c03be90bccaef00e1750acfcd3d21b02e 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6562,8 +6562,9 @@ class Script: public Struct {
   static const int kCompilationTypeBit = 0;
   static const int kCompilationStateBit = 1;
   static const int kHideSourceBit = 2;
-  static const int kOriginOptionsShift = 3;
-  static const int kOriginOptionsSize = 3;
+  static const int kSkipHtmlCommentsBit = 3;
+  static const int kOriginOptionsShift = 4;
+  static const int kOriginOptionsSize = 4;
   static const int kOriginOptionsMask = ((1 << kOriginOptionsSize) - 1)
                                         << kOriginOptionsShift;