Componentize HistoryDatabase

components/history/core/browser/history_database_params.h

Index: components/history/core/browser/history_database_params.h
diff --git a/components/history/core/browser/history_database_params.h b/components/history/core/browser/history_database_params.h
new file mode 100644
index 0000000000000000000000000000000000000000..3af9c84c277395b2cce4891896fcac18a28b8ea9
--- /dev/null
+++ b/components/history/core/browser/history_database_params.h
@@ -0,0 +1,31 @@
+// 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_BROWSER_HISTORY_DATABASE_PARAMS_H_
+#define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_DATABASE_PARAMS_H_
+
+#include "base/files/file_path.h"
+#include "components/history/core/browser/download_types.h"
+
+namespace history {
+
+// HistoryDatabaseParams store parameters for HistoryDatabase constructor and
+// Init methods so that they can be easily passed around between HistoryService
+// and HistoryBackend.
+struct HistoryDatabaseParams {
+  HistoryDatabaseParams();
+  HistoryDatabaseParams(
+      const base::FilePath& history_dir,
+      DownloadInterruptReason download_interrupt_reason_none,
+      DownloadInterruptReason download_interrupt_reason_crash);
+  ~HistoryDatabaseParams();
+
+  base::FilePath history_dir;
+  DownloadInterruptReason download_interrupt_reason_none;
+  DownloadInterruptReason download_interrupt_reason_crash;
+};
+
+}  // namespace history
+
+#endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_DATABASE_PARAMS_H_