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

components/omnibox/browser/history_test_util.h

Index: components/omnibox/browser/history_test_util.h
diff --git a/components/omnibox/browser/history_test_util.h b/components/omnibox/browser/history_test_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..dd9ef5f7740ca1e1fe6fa85040db44d9a0a52aaf
--- /dev/null
+++ b/components/omnibox/browser/history_test_util.h
@@ -0,0 +1,21 @@
+// 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_
+
+namespace sql {
+class Connection;
+}  // namespace sql
+
+namespace history {
+
+class HistoryDatabase;
+class URLRow;
+
+void AddFakeURLToHistoryDB(HistoryDatabase* history_db, const URLRow& url_row);
+
+}  // namespace history
+
+#endif  // COMPONENTS_OMNIBOX_BROWSER_HISTORY_TEST_UTIL_H_