Share optimized code for closures.

src/runtime.cc

Index: src/runtime.cc
===================================================================
--- src/runtime.cc	(revision 11394)
+++ src/runtime.cc	(working copy)
@@ -8190,8 +8190,12 @@
       PrintF("]\n");
     }
     function->ReplaceCode(function->shared()->code());
+    // Flush optimized code cache for this function.
+    function->shared()->set_optimized_code_map(Smi::FromInt(0));
   } else {
     Deoptimizer::DeoptimizeFunction(*function);
+    // Flush optimized code cache for this function.
+    function->shared()->set_optimized_code_map(Smi::FromInt(0));
   }
   return isolate->heap()->undefined_value();
 }