Implement one click login.

chrome/browser/ui/sync/one_click_signin_sync_starter.h

+// Copyright (c) 2012 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_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_
+#define CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_
+#pragma once
+
+#include "chrome/browser/signin/signin_tracker.h"
+
+class Profile;
+
+// Waits for successful singin notification from the signin manager and then
+// starts the sync machine.  Instances of this class delete themselves once
+// the job is done.
+class OneClickSigninSyncStarter : public SigninTracker::Observer {
+ public:
+  OneClickSigninSyncStarter(const std::string& email,
+                            const std::string& password,
+                            Profile* profile,
+                            bool use_default_settings);
+
+ private:
+  ~OneClickSigninSyncStarter();
+
+  // content::SigninTracker::Observer override.
+  virtual void GaiaCredentialsValid() OVERRIDE;
+  virtual void SigninFailed() OVERRIDE;
+  virtual void SigninSuccess() OVERRIDE;
+
+  Profile* profile_;
+  SigninTracker signin_tracker_;
+  bool use_default_settings_;
+
+  DISALLOW_COPY_AND_ASSIGN(OneClickSigninSyncStarter);
+};
+
+
+#endif  // CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_SYNC_STARTER_H_