Fix test failures in debug mode w/snapshots. It turns out that not

src/log.cc

Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index 1281a863b64758158334bb98b1921d4dd9adb1bd..0e3f998bdf8b81113c9c60062cca62bc131fd903 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -1261,7 +1261,9 @@ void Logger::LogCodeObject(Object* object) {
       case Code::FUNCTION:
         return;  // We log this later using LogCompiledFunctions.
       case Code::STUB:
-        description = CodeStub::MajorName(code_object->major_key());
+        description = CodeStub::MajorName(code_object->major_key(), true);
+        if (description == NULL)
+          description = "A stub from the snapshot";
         tag = Logger::STUB_TAG;
         break;
       case Code::BUILTIN: