Prevent ObjectBackedNativeHandler from calling itself once invalid.

chrome/browser/extensions/crazy_extension_browsertest.cc

Index: chrome/browser/extensions/crazy_extension_browsertest.cc
diff --git a/chrome/browser/extensions/crazy_extension_browsertest.cc b/chrome/browser/extensions/crazy_extension_browsertest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..500a139afbc50e7e52bb1ad787d69ccf5718dc5e
--- /dev/null
+++ b/chrome/browser/extensions/crazy_extension_browsertest.cc
@@ -0,0 +1,17 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/extension_apitest.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace extensions {
+
+class CrazyExtensionTest : public ExtensionApiTest {
+};
+
+IN_PROC_BROWSER_TEST_F(CrazyExtensionTest, Crazy) {
+  ASSERT_TRUE(RunExtensionTest("crazy_extension"));
+}
+
+}  // namespace extensions