Componentize HistoryDatabase

components/history/core/android/android_time.h

-// Copyright (c) 2012 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_ANDROID_ANDROID_TIME_H_
-#define COMPONENTS_HISTORY_CORE_ANDROID_ANDROID_TIME_H_
-
-#include "base/time/time.h"
-
-namespace history {
-
-// Android's system time is the milliseconds since January 1, 1970 00:00:00 UTC,
-// the below 2 methods are used convert between base::Time and the milliseconds
-// stored in database.
-inline base::Time FromDatabaseTime(int64 milliseconds) {
-  return base::TimeDelta::FromMilliseconds(milliseconds) +
-      base::Time::UnixEpoch();
-}
-
-inline int64 ToDatabaseTime(const base::Time& time) {
-  return (time - base::Time::UnixEpoch()).InMilliseconds();
-}
-
-}  // namespace history
-
-#endif  // COMPONENTS_HISTORY_CORE_ANDROID_ANDROID_TIME_H_