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

src/compilation-info.cc

Index: src/compilation-info.cc
diff --git a/src/compilation-info.cc b/src/compilation-info.cc
index 2e0934a2cd0bbe1eac727c6d5c011743d9b57f21..5790a462a8ff0d375d79cc9127d328c39bea8d0e 100644
--- a/src/compilation-info.cc
+++ b/src/compilation-info.cc
@@ -24,13 +24,26 @@ namespace internal {
     return parse_info() ? parse_info()->name() : def;   \
   }
 
+#define PARSE_INFO_GETTER_AND_SETTER(type, name, def) \
+  type CompilationInfo::name() const {                \
+    return parse_info() ? parse_info()->name() : def; \
+  }                                                   \
+                                                      \
+  void CompilationInfo::set_##name() {                \
+    CHECK(parse_info());                              \
+    parse_info()->set_##name();                       \
+  }
+
 PARSE_INFO_GETTER(Handle<Script>, script)
 PARSE_INFO_GETTER(FunctionLiteral*, literal)
 PARSE_INFO_GETTER_WITH_DEFAULT(DeclarationScope*, scope, nullptr)
 PARSE_INFO_GETTER(Handle<SharedFunctionInfo>, shared_info)
+PARSE_INFO_GETTER_AND_SETTER(bool, is_debug, false)
+PARSE_INFO_GETTER_AND_SETTER(bool, will_serialize, false)
 
 #undef PARSE_INFO_GETTER
 #undef PARSE_INFO_GETTER_WITH_DEFAULT
+#undef PARSE_INFO_GETTER_AND_SETTER
 
 bool CompilationInfo::has_shared_info() const {
   return parse_info_ && !parse_info_->shared_info().is_null();