Fix details in message formatting.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11360220

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/isolate.cc

@@ -1235,7 +1235,7 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
       // exception object to be set later must not be turned into a string.
       if (exception_arg->IsJSObject() && !IsErrorObject(exception_arg)) {
         bool failed = false;
-        exception_arg = Execution::ToString(exception_arg, &failed);
+        exception_arg = Execution::ToDetailString(exception_arg, &failed);
         if (failed) {
           exception_arg = factory()->LookupAsciiSymbol("exception");
         }

src/messages.js

@@ -190,6 +190,7 @@ function NoSideEffectToString(obj) {
   if (IS_BOOLEAN(obj)) return x ? 'true' : 'false';
   if (IS_UNDEFINED(obj)) return 'undefined';
   if (IS_NULL(obj)) return 'null';
+  if (IS_FUNCTION(obj)) return  %_CallFunction(obj, FunctionToString);
   if (IS_OBJECT(obj) && %GetDataProperty(obj, "toString") === ObjectToString) {
     var constructor = obj.constructor;
     if (typeof constructor == "function") {