Handle birthday errors by disabling sync and deleting sync data.

chrome/test/sync/engine/mock_connection_manager.h

 // Copyright (c) 2009 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.
 //
 // Mock ServerConnectionManager class for use in client unit tests.
 
 #ifndef CHROME_TEST_SYNC_ENGINE_MOCK_CONNECTION_MANAGER_H_
 #define CHROME_TEST_SYNC_ENGINE_MOCK_CONNECTION_MANAGER_H_
 
 #include <bitset>
@@ skipping 140 matching lines @@
     next_new_id_ = value;
   }
   void set_conflict_n_commits(int value) {
     conflict_n_commits_ = value;
   }
 
   void set_use_legacy_bookmarks_protocol(bool value) {
     use_legacy_bookmarks_protocol_ = value;
   }
 
+  void set_store_birthday(string new_birthday) {
+    store_birthday_ = new_birthday;
+  }
+
   // Retrieve the number of GetUpdates requests that the mock server has
   // seen since the last time this function was called.  Can be used to
   // verify that a GetUpdates actually did or did not happen after running
   // the syncer.
   int GetAndClearNumGetUpdatesRequests() {
     int result = num_get_updates_requests_;
     num_get_updates_requests_ = 0;
     return result;
   }
 
@@ skipping 109 matching lines @@
   std::bitset<syncable::MODEL_TYPE_COUNT> expected_filter_;
 
   int num_get_updates_requests_;
 
   sync_pb::ClientToServerMessage last_request_;
 
   DISALLOW_COPY_AND_ASSIGN(MockConnectionManager);
 };
 
 #endif  // CHROME_TEST_SYNC_ENGINE_MOCK_CONNECTION_MANAGER_H_