Adding performance tests for HQP that represent importance of optimising HistoryItemsForTerms method

components/omnibox/browser/history_test_util.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 COMPONENTS_OMNIBOX_BROWSER_HISTORY_TEST_UTIL_H_
+#define COMPONENTS_OMNIBOX_BROWSER_HISTORY_TEST_UTIL_H_
+
+#include <string>
+
+#include "base/time/time.h"
+#include "ui/base/page_transition_types.h"
+
+namespace sql {
+class Connection;
+}  // namespace sql
+
+namespace history {
+
+void AddURLToDBForTests(sql::Connection* db,
+                        std::size_t url_id,
+                        const std::string& url,
+                        const std::string& title,
+                        int visit_count,
+                        int typed_count,
+                        base::Time last_visit_time);
+
+void AddVisitToDBForTests(sql::Connection* db,
+                          std::size_t visit_id,
+                          std::size_t url_id,
+                          base::Time visit_time,
+                          ui::PageTransition transition);
+
+#endif  // COMPONENTS_OMNIBOX_BROWSER_HISTORY_TEST_UTIL_H_
+
+}  // namespace history