[Sync] Sync should run canary cycle after any network related error

sync/internal_api/syncapi_server_connection_manager.h

 // Copyright 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.
 
 #ifndef SYNC_INTERNAL_API_SYNCAPI_SERVER_CONNECTION_MANAGER_H_
 #define SYNC_INTERNAL_API_SYNCAPI_SERVER_CONNECTION_MANAGER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 49 matching lines @@
   ~SyncAPIServerConnectionManager() override;
 
   // ServerConnectionManager overrides.
   Connection* MakeConnection() override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SyncAPIServerConnectionManagerTest,
                            VeryEarlyAbortPost);
   FRIEND_TEST_ALL_PREFIXES(SyncAPIServerConnectionManagerTest, EarlyAbortPost);
   FRIEND_TEST_ALL_PREFIXES(SyncAPIServerConnectionManagerTest, AbortPost);
+  FRIEND_TEST_ALL_PREFIXES(SyncAPIServerConnectionManagerTest,
+                           FailPostWithTimedOut);
 
   // A factory creating concrete HttpPostProviders for use whenever we need to
   // issue a POST to sync servers.
   scoped_ptr<HttpPostProviderFactory> post_provider_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncAPIServerConnectionManager);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_SYNCAPI_SERVER_CONNECTION_MANAGER_H_