Enable optimization of top-level code.

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 10686)
+++ src/objects.h	(working copy)
@@ -5313,9 +5313,12 @@
   // through the API, which does not change this flag).
   DECL_BOOLEAN_ACCESSORS(is_anonymous)
 
-  // Indicates that the function cannot be crankshafted.
-  DECL_BOOLEAN_ACCESSORS(dont_crankshaft)
+  // Is this a function or top-level/eval code.
+  DECL_BOOLEAN_ACCESSORS(is_function)
 
+  // Indicates that the function cannot be optimized.
+  DECL_BOOLEAN_ACCESSORS(dont_optimize)
+
   // Indicates that the function cannot be inlined.
   DECL_BOOLEAN_ACCESSORS(dont_inline)
 
@@ -5527,7 +5530,8 @@
     kBoundFunction,
     kIsAnonymous,
     kNameShouldPrintAsAnonymous,
-    kDontCrankshaft,
+    kIsFunction,
+    kDontOptimize,
     kDontInline,
     kCompilerHintsCount  // Pseudo entry
   };