Componentize HistoryDatabase

components/history/core/test/test_history_database.h

Index: components/history/core/test/test_history_database.h
diff --git a/components/history/core/test/test_history_database.h b/components/history/core/test/test_history_database.h
new file mode 100644
index 0000000000000000000000000000000000000000..178b8a88a64f903b498cd5022cfd89cb2cbb5360
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+++ b/components/history/core/test/test_history_database.h
@@ -0,0 +1,32 @@
+// 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_HISTORY_CORE_TEST_TEST_HISTORY_DATABASE_H_
+#define COMPONENTS_HISTORY_CORE_TEST_TEST_HISTORY_DATABASE_H_
+
+#include "components/history/core/browser/history_database.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace history {
+
+struct HistoryDatabaseParams;
+
+// TestHistoryDatabase is a simple wrapper around HistoryDatabase that provides
+// default values to the constructor.
+class TestHistoryDatabase : public HistoryDatabase {
+ public:
+  TestHistoryDatabase();
+  ~TestHistoryDatabase() override;
+};
+
+// Returns a HistoryDatabaseParams for unit tests.
+HistoryDatabaseParams TestHistoryDatabaseParamsForPath(
+    const base::FilePath& history_dir);
+
+}  // namespace history
+
+#endif  // COMPONENTS_HISTORY_CORE_TEST_TEST_HISTORY_DATABASE_H_