Move (most of) chrome/browser/drive into components/drive/service.

components/drive/drive_notification_observer.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_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
-#define CHROME_BROWSER_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
+#ifndef COMPONENTS_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
+#define COMPONENTS_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
 
 namespace drive {
 
 // Interface for classes which need to know when to check Google Drive for
 // updates.
 class DriveNotificationObserver {
  public:
   // Called when a notification from Google Drive is received.
   virtual void OnNotificationReceived() = 0;
 
   // Called when XMPP-based push notification is enabled or disabled.
   virtual void OnPushNotificationEnabled(bool enabled) {}
 
  protected:
   virtual ~DriveNotificationObserver() {}
 };
 
 }  // namespace drive
 
-#endif  // CHROME_BROWSER_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
+#endif  // COMPONENTS_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_