Teach Scopes whether they will end up being lazily compiled or not

src/parsing/parse-info.h

Index: src/parsing/parse-info.h
diff --git a/src/parsing/parse-info.h b/src/parsing/parse-info.h
index 4aedae4978ea7cad8d91e7cff93d3ad1b9caeb8b..994bcfd853b9c43df285ac61885f7ba7cbe9669c 100644
--- a/src/parsing/parse-info.h
+++ b/src/parsing/parse-info.h
@@ -57,6 +57,8 @@ class ParseInfo {
   FLAG_ACCESSOR(kIsNamedExpression, is_named_expression,
                 set_is_named_expression)
   FLAG_ACCESSOR(kCallsEval, calls_eval, set_calls_eval)
+  FLAG_ACCESSOR(kDebug, is_debug, set_is_debug)
+  FLAG_ACCESSOR(kSerializing, will_serialize, set_will_serialize)
 
 #undef FLAG_ACCESSOR
 
@@ -206,8 +208,10 @@ class ParseInfo {
     kAllowLazyParsing = 1 << 8,
     kIsNamedExpression = 1 << 9,
     kCallsEval = 1 << 10,
+    kDebug = 1 << 11,
+    kSerializing = 1 << 12,
     // ---------- Output flags --------------------------
-    kAstValueFactoryOwned = 1 << 11
+    kAstValueFactoryOwned = 1 << 13
   };
 
   //------------- Inputs to parsing and scope analysis -----------------------