Added Protector, hooked up DSE verification with error bubble.

chrome/browser/protector/keys.cc

Index: chrome/browser/protector/keys.cc
diff --git a/chrome/browser/protector/keys.cc b/chrome/browser/protector/keys.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6f4630bf824cb5bba3591ca8e16b0c233cad905c
--- /dev/null
+++ b/chrome/browser/protector/keys.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2011 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/protector/keys.h"
+
+namespace protector {
+
+// When changing the key, be sure to add migration code to keep user's
+// settings safe.
+const char kProtectorSigningKey[] = "Please, don't change this Chrome setting";
+
+}  // namespace protector