Function.caller when caller is a strict function.

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index 2ba12fd9f9a0f5355fb0f1c7ecd6e42e72af0dbd..3eb056f33248314292d6cb947a05a8f460898b51 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -234,6 +234,7 @@ function FormatMessage(message) {
       strict_arguments_caller:      ["Cannot access property 'caller' of strict mode arguments"],
       strict_function_caller:       ["Cannot access property 'caller' of a strict mode function"],
       strict_function_arguments:    ["Cannot access property 'arguments' of a strict mode function"],
+      strict_caller:                ["Illegal access to a strict mode caller function."],
     };
   }
   var message_type = %MessageGetType(message);