Enable Google Drive offline mode automatically on first run.

chrome/browser/chromeos/first_run/drive_first_run_controller.h

+// 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.
+#ifndef CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
+#define CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
+
+#include "base/basictypes.h"
+#include "base/timer/timer.h"
+#include "chrome/browser/profiles/profile.h"
+
+namespace chromeos {
+
+class DriveWebContentsManager;
+
+// This class is responsible for kicking off the Google Drive offline
+// initialization process. There is an initial delay to avoid contention when
+// the session starts. DriveFirstRunController will manage its own lifetime and
+// destroy itself when the initialization succeeds or fails.
+class DriveFirstRunController {
+ public:
+  DriveFirstRunController();
+  ~DriveFirstRunController();
+
+  void EnableOfflineMode();

[achuithb, 2013/11/04 20:33:24]

Please add a short comment for each function in this class explaining what it
does or noting that it's used as a callback, etc.

[Tim Song, 2013/11/05 01:18:06]

Done.

+
+ private:
+  void OnOptInDone(bool success);
+  void OnWebContentsTimedOut();
+  void CleanUp();
+
+  Profile* profile_;
+  scoped_ptr<DriveWebContentsManager> web_contents_manager_;
+  base::OneShotTimer<DriveFirstRunController> web_contents_timer_;
+  base::OneShotTimer<DriveFirstRunController> initial_delay_timer_;
+  bool started_;
+
+  DISALLOW_COPY_AND_ASSIGN(DriveFirstRunController);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_