Revert of [Sync] Refactoring polling to be reliable.

sync/internal_api/public/test/fake_sync_manager.h

 // 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.
 
 #ifndef SYNC_INTERNAL_API_PUBLIC_TEST_FAKE_SYNC_MANAGER_H_
 #define SYNC_INTERNAL_API_PUBLIC_TEST_FAKE_SYNC_MANAGER_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 65 matching lines @@
 
   // SyncManager implementation.
   // Note: we treat whatever message loop this is called from as the sync
   // loop for purposes of callbacks.
   void Init(InitArgs* args) override;
   ModelTypeSet InitialSyncEndedTypes() override;
   ModelTypeSet GetTypesWithEmptyProgressMarkerToken(
       ModelTypeSet types) override;
   bool PurgePartiallySyncedTypes() override;
   void UpdateCredentials(const SyncCredentials& credentials) override;
-  void StartSyncingNormally(const ModelSafeRoutingInfo& routing_info,
-                            base::Time last_poll_time) override;
+  void StartSyncingNormally(const ModelSafeRoutingInfo& routing_info) override;
   void ConfigureSyncer(ConfigureReason reason,
                        ModelTypeSet to_download,
                        ModelTypeSet to_purge,
                        ModelTypeSet to_journal,
                        ModelTypeSet to_unapply,
                        const ModelSafeRoutingInfo& new_routing_info,
                        const base::Closure& ready_task,
                        const base::Closure& retry_task) override;
   void AddObserver(Observer* observer) override;
   void RemoveObserver(Observer* observer) override;
@@ skipping 49 matching lines @@
   TestUserShare test_user_share_;
 
   NullSyncContextProxy null_sync_context_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSyncManager);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_TEST_FAKE_SYNC_MANAGER_H_