Add BrowsingDataCounterFactory

chrome/browser/browsing_data/browsing_data_counter_factory.h

+// Copyright 2016 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 CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COUNTER_FACTORY_H_
+#define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COUNTER_FACTORY_H_
+
+#include <memory>
+#include <string>
+
+#include "base/macros.h"
+
+class Profile;
+
+namespace browsing_data {
+class BrowsingDataCounter;
+}
+
+class BrowsingDataCounterFactory {
+ public:
+  // Creates a new instance of BrowsingDataCounter that is counting the data
+  // for |profile|, related to a given deletion preference |pref_name|.
+  static std::unique_ptr<browsing_data::BrowsingDataCounter>
+  GetForProfileAndPref(Profile* profile, const std::string& pref_name);
+
+ private:
+  BrowsingDataCounterFactory();
+  ~BrowsingDataCounterFactory();
+
+  DISALLOW_COPY_AND_ASSIGN(BrowsingDataCounterFactory);
+};
+
+#endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_COUNTER_FACTORY_H_