Prase IDL files in common/extensions/api PRESUBMIT check.

chrome/common/extensions/api/test_presubmit/invalid_idl_8.idl

Index: chrome/common/extensions/api/test_presubmit/invalid_idl_8.idl
diff --git a/chrome/common/extensions/api/test_presubmit/invalid_idl_8.idl b/chrome/common/extensions/api/test_presubmit/invalid_idl_8.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5cfc9ec5cd9bbaa5e820b08d93c3aae175309e13
--- /dev/null
+++ b/chrome/common/extensions/api/test_presubmit/invalid_idl_8.idl
@@ -0,0 +1,12 @@
+// 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.
+
+// Tests an invalid IDL file.
+
+namespace test {
+  // Did not process Interface Interface(NotEvent).
+  interface NotEvent {
+    static void onFoo1();
+  };
+};