Move browsing_data counter sync tests to separate file

components/browsing_data/core/counters/history_counter.h

 // Copyright (c) 2015 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 COMPONENTS_BROWSING_DATA_CORE_COUNTERS_HISTORY_COUNTER_H_
 #define COMPONENTS_BROWSING_DATA_CORE_COUNTERS_HISTORY_COUNTER_H_
 
 #include <memory>
 
 #include "base/task/cancelable_task_tracker.h"
 #include "base/timer/timer.h"
 #include "components/browsing_data/core/counters/browsing_data_counter.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/history/core/browser/web_history_service.h"
 #include "components/sync/driver/sync_service.h"
 #include "components/sync/driver/sync_service_observer.h"
 
 namespace browsing_data {
 
 class HistoryCounter : public browsing_data::BrowsingDataCounter,
                        public syncer::SyncServiceObserver {
  public:
   typedef base::Callback<history::WebHistoryService*()>
       GetUpdatedWebHistoryServiceCallback;
 
-  class HistoryResult : public FinishedResult {
-   public:
-    HistoryResult(const HistoryCounter* source,
-                  ResultInt value,
-                  bool has_synced_visits);
-    ~HistoryResult() override;
-
-    bool has_synced_visits() const { return has_synced_visits_; }
-
-   private:
-    bool has_synced_visits_;
-  };
-
   explicit HistoryCounter(history::HistoryService* history_service,
                           const GetUpdatedWebHistoryServiceCallback& callback,
                           syncer::SyncService* sync_service);
   ~HistoryCounter() override;
 
   void OnInitialized() override;
 
   // Whether there are counting tasks in progress. Only used for testing.
   bool HasTrackedTasks();
 
@@ skipping 31 matching lines @@
   BrowsingDataCounter::ResultInt local_result_;
 
   bool history_sync_enabled_;
 
   base::WeakPtrFactory<HistoryCounter> weak_ptr_factory_;
 };
 
 }  // namespace browsing_data
 
 #endif  // COMPONENTS_BROWSING_DATA_CORE_COUNTERS_HISTORY_COUNTER_H_