Do not serialize non-lazy compiled function literals.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index ea93f408c653127fe2c3cd58bf49140df3efdf6b..a0b0346520e12dce3edd551bea9512f711075314 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -82,7 +82,8 @@ class CompilationInfo {
     kSerializing = 1 << 15,
     kContextSpecializing = 1 << 16,
     kInliningEnabled = 1 << 17,
-    kTypingEnabled = 1 << 18
+    kTypingEnabled = 1 << 18,
+    kToplevel = 1 << 19
   };
 
   CompilationInfo(Handle<JSFunction> closure, Zone* zone);
@@ -205,6 +206,10 @@ class CompilationInfo {
 
   bool is_typing_enabled() const { return GetFlag(kTypingEnabled); }
 
+  void MarkAsToplevel() { SetFlag(kToplevel); }
+
+  bool is_toplevel() const { return GetFlag(kToplevel); }
+
   bool IsCodePreAgingActive() const {
     return FLAG_optimize_for_size && FLAG_age_code && !will_serialize() &&
            !is_debug();