Move browsing_data counter sync tests to separate file

components/browsing_data/core/counters/browsing_data_counter.h

 // Copyright 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_BROWSING_DATA_COUNTER_H_
 #define COMPONENTS_BROWSING_DATA_CORE_COUNTERS_BROWSING_DATA_COUNTER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 42 matching lines @@
     bool Finished() const override;
 
     ResultInt Value() const;
 
    private:
     ResultInt value_;
 
     DISALLOW_COPY_AND_ASSIGN(FinishedResult);
   };
 
+  // A subclass of FinishedResult that besides |Value()| also stores whether
+  // the datatype is synced.
+  class SyncResult : public FinishedResult {
+   public:
+    SyncResult(const BrowsingDataCounter* source,
+               ResultInt value,
+               bool sync_enabled);
+    ~SyncResult() override;
+
+    bool IsSyncEnabled() const;
+
+   private:
+    bool sync_enabled_;
+
+    DISALLOW_COPY_AND_ASSIGN(SyncResult);
+  };
+
   typedef base::Callback<void(std::unique_ptr<Result>)> Callback;
 
   // Every calculation progresses through a state machine. At initialization,
   // the counter is IDLE. If a result is calculated within a given time
   // interval, it is immediately reported and the counter is again IDLE.
   // Otherwise, the counter instructs the UI to show a "Calculating..."
   // message and transitions to the SHOW_CALCULATING state. The counter stays
   // in this state for a given amount of time. If a result is calculated at
   // this time, it is stored, but not immediately reported. After the timer
   // elapses, we check if a result has been reported in the meantime. If yes,
@@ skipping 90 matching lines @@
   std::unique_ptr<Result> staged_result_;
 
   // A timer to time the RESTARTED->SHOW_CALCULATION and
   // SHOW_CALCULATION->READY_TO_REPORT_RESULT state transitions.
   base::OneShotTimer timer_;
 };
 
 }  // namespace browsing_data
 
 #endif  // COMPONENTS_BROWSING_DATA_CORE_COUNTERS_BROWSING_DATA_COUNTER_H_