Identity API: Add chrome.identity.onSignInChanged routing and IDL

chrome/browser/extensions/api/identity/identity_event_router.h

+// Copyright (c) 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_EVENT_ROUTER_H_
+#define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_EVENT_ROUTER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+class Profile;
+
+namespace extensions {
+
+class IdentityEventRouter {
+ public:
+  explicit IdentityEventRouter(Profile* profile);
+  ~IdentityEventRouter();
+
+  // Dispatch identity.onSignInChanged event, including email address
+  // for extensions with the identity.email permission.
+  void DispatchSignInEvent(const std::string& id,
+                           const std::string& email,
+                           bool is_signed_in);
+
+ private:
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(IdentityEventRouter);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_EVENT_ROUTER_H_