[Sync] Remove backend unrecoverable error handler

sync/internal_api/public/sync_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_PUBLIC_SYNC_MANAGER_H_
 #define SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 #include "sync/internal_api/public/change_record.h"
 #include "sync/internal_api/public/configure_reason.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/internal_api/public/engine/sync_status.h"
 #include "sync/internal_api/public/events/protocol_event.h"
 #include "sync/internal_api/public/http_post_provider_factory.h"
 #include "sync/internal_api/public/internal_components_factory.h"
 #include "sync/internal_api/public/shutdown_reason.h"
 #include "sync/internal_api/public/sync_context_proxy.h"
 #include "sync/internal_api/public/sync_encryption_handler.h"
-#include "sync/internal_api/public/util/unrecoverable_error_handler.h"
 #include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/protocol/sync_protocol_error.h"
 
 class GURL;
 
 namespace sync_pb {
 class EncryptedData;
 }  // namespace sync_pb
 
 namespace syncer {
 
 class BaseTransaction;
 class CancelationSignal;
 class DataTypeDebugInfoListener;
 class Encryptor;
 class ExtensionsActivity;
 class InternalComponentsFactory;
 class JsBackend;
 class JsEventHandler;
 class ProtocolEvent;
 class SyncEncryptionHandler;
 class SyncScheduler;
 class TypeDebugInfoObserver;
+class UnrecoverableErrorHandler;
 struct Experiments;
 struct UserShare;
 
 namespace sessions {
 class SyncSessionSnapshot;
 }  // namespace sessions
 
 // Used by SyncManager::OnConnectionStatusChange().
 enum ConnectionStatus {
   CONNECTION_NOT_ATTEMPTED,
@@ skipping 186 matching lines @@
 
     // Used to boostrap the cryptographer.
     std::string restored_key_for_bootstrapping;
     std::string restored_keystore_key_for_bootstrapping;
 
     scoped_ptr<InternalComponentsFactory> internal_components_factory;
 
     // Must outlive SyncManager.
     Encryptor* encryptor;
 
-    scoped_ptr<UnrecoverableErrorHandler> unrecoverable_error_handler;
+    WeakHandle<UnrecoverableErrorHandler> unrecoverable_error_handler;
     base::Closure report_unrecoverable_error_function;
 
     // Carries shutdown requests across threads and will be used to cut short
     // any network I/O and tell the syncer to exit early.
     //
     // Must outlive SyncManager.
     CancelationSignal* cancelation_signal;
 
     // Optional nigori state to be restored.
     scoped_ptr<SyncEncryptionHandler::NigoriState> saved_nigori_state;
@@ skipping 132 matching lines @@
   //
   // This is an asynchronous operation that requires interaction with the sync
   // server. The operation will automatically be retried with backoff until it
   // completes successfully or sync is shutdown.
   virtual void ClearServerData(const ClearServerDataCallback& callback) = 0;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_SYNC_MANAGER_H_