Wire easy unlock settings UI

chrome/browser/signin/easy_unlock_service_observer.h

Index: chrome/browser/signin/easy_unlock_service_observer.h
diff --git a/chrome/browser/signin/easy_unlock_service_observer.h b/chrome/browser/signin/easy_unlock_service_observer.h
new file mode 100644
index 0000000000000000000000000000000000000000..f5569ff6b8d79fc3756e5324b6b936c0aaddac88
--- /dev/null
+++ b/chrome/browser/signin/easy_unlock_service_observer.h
@@ -0,0 +1,17 @@
+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_OBSERVER_H_
+#define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_OBSERVER_H_
+
+class EasyUnlockServiceObserver {
+ public:
+  // Invoked when turn-off operation status changes.
+  virtual void OnTurnOffOperationStatusChanged() = 0;
+
+ protected:
+  virtual ~EasyUnlockServiceObserver() {}
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SERVICE_OBSERVER_H_