Reset opt count on optimized code map lookup failure.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 400132e14b520f1bf5ff7992d4c59e090d9dde88..39a1795d3e950dab49f4b13feea8fb2311c0abd2 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -711,6 +711,12 @@ Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo(
     // Caching of optimized code enabled and optimized code found.
     function_info->InstallFromOptimizedCodeMap(*result, index);
     return result;
+  } else {
+    // The optimization count should be tied to the context, similar to the
+    // optimized code map.  But for simplicity's sake we just reset the opt
+    // count whenever the optimized code map lookup fails.  This happens
+    // only when the function has never been optimized for the current context.
+    function_info->set_opt_count(0);
   }
 
   if (isolate()->use_crankshaft() &&