Do not serialize non-lazy compiled function literals.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 685009ec53a5998024e28aced0014507079efd97..431872df282f33d24b5185bc5cbe13adccef49ff 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -912,6 +912,8 @@ static Handle<SharedFunctionInfo> CompileToplevel(CompilationInfo* info) {
 
   DCHECK(info->is_eval() || info->is_global());
 
+  info->MarkAsToplevel();
+
   Handle<SharedFunctionInfo> result;
 
   { VMState<COMPILER> state(info->isolate());
@@ -1178,6 +1180,13 @@ Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(
   bool allow_lazy = literal->AllowsLazyCompilation() &&
       !DebuggerWantsEagerCompilation(&info, allow_lazy_without_ctx);
 
+
+  if (outer_info->is_toplevel() && outer_info->will_serialize()) {
+    // Make sure that if the toplevel code (possibly to be serialized),
+    // the inner unction must be allowed to be compiled lazily.
+    DCHECK(allow_lazy);
+  }
+
   // Generate code
   Handle<ScopeInfo> scope_info;
   if (FLAG_lazy && allow_lazy && !literal->is_parenthesized()) {