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

components/drive/drive_notification_observer.h

Index: components/drive/drive_notification_observer.h
diff --git a/chrome/browser/drive/drive_notification_observer.h b/components/drive/drive_notification_observer.h
similarity index 77%
rename from chrome/browser/drive/drive_notification_observer.h
rename to components/drive/drive_notification_observer.h
index 5f6738f1f29ae3c67c95349c2341d93ad2dd6e4c..b04a06b6e328dd8b7e531ca2773720150606a19b 100644
--- a/chrome/browser/drive/drive_notification_observer.h
+++ b/components/drive/drive_notification_observer.h
@@ -2,8 +2,8 @@
 // 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 {
 
@@ -23,4 +23,4 @@ class DriveNotificationObserver {
 
 }  // namespace drive
 
-#endif  // CHROME_BROWSER_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_
+#endif  // COMPONENTS_DRIVE_DRIVE_NOTIFICATION_OBSERVER_H_