[Sync] Remove ScopedServerStatusWatcher

sync/protocol/sync_enums.proto

 // 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.
 //
 // Sync protocol for communication between sync client and server.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 59 matching lines @@
   }
 
   // Types of redirects that triggered a transition.
   enum PageTransitionRedirectType {
     CLIENT_REDIRECT = 1;
     SERVER_REDIRECT = 2;
   }
 
   enum ErrorType {
     SUCCESS               = 0;
-    ACCESS_DENIED         = 1;  // Returned when the user doesn't have access to
-                                // store (instead of HTTP 401).
+    DEPRECATED_ACCESS_DENIED = 1;
     NOT_MY_BIRTHDAY       = 2;  // Returned when the server and client disagree
                                 // on the store birthday.
     THROTTLED             = 3;  // Returned when the store has exceeded the
                                 // allowed bandwidth utilization.
-    AUTH_EXPIRED          = 4;  // Auth token or cookie has expired.
-    USER_NOT_ACTIVATED    = 5;  // User doesn't have the Chrome bit set on that
-                                // Google Account.
-    AUTH_INVALID          = 6;  // Auth token or cookie is otherwise invalid.
+    DEPRECATED_AUTH_EXPIRED = 4;
+    DEPRECATED_USER_NOT_ACTIVATED = 5;
+    DEPRECATED_AUTH_INVALID = 6;
     CLEAR_PENDING         = 7;  // A clear of the user data is pending (e.g.
                                 // initiated by privacy request).  Client should
                                 // come back later.
     TRANSIENT_ERROR       = 8;  // A transient error occured (eg. backend
                                 // timeout). Client should try again later.
     MIGRATION_DONE        = 9;  // Migration has finished for one or more data
                                 // types.  Client should clear the cache for
                                 // these data types only and then re-sync with
                                 // a server.
     DISABLED_BY_ADMIN    = 10;  // An administrator disabled sync for this
@@ skipping 60 matching lines @@
                            // user opted to sync a different set of datatypes.
     GU_TRIGGER = 12;  // The client is in 'normal' mode.  It may have several
                       // reasons for requesting an update.  See the per-type
                       // GetUpdateTriggers message for more details.
     RETRY = 13;  // A retry GU to pick up updates missed by last GU due to
                  // replication delay, missing hints, etc.
     PROGRAMMATIC = 14;     // A GU to programmatically enable/disable a
                            // datatype, often due to error handling.
   }
 }