Make browsing_data component a layered component

components/browsing_data/browsing_data_utils.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_BROWSING_DATA_BROWSING_DATA_UTILS_H_
-#define COMPONENTS_BROWSING_DATA_BROWSING_DATA_UTILS_H_
-
-#include "base/strings/string16.h"
-#include "base/time/time.h"
-
-namespace browsing_data {
-
-// Browsing data types as seen in the Android UI.
-// TODO(msramek): Reuse this enum as the canonical representation of the
-// user-facing browsing data types in the Desktop UI as well.
-//
-// A Java counterpart will be generated for this enum.
-// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser
-enum BrowsingDataType {
-  HISTORY,
-  CACHE,
-  COOKIES,
-  PASSWORDS,
-  FORM_DATA,
-  BOOKMARKS,
-  NUM_TYPES
-};
-
-// Time period ranges available when doing browsing data removals.
-//
-// A Java counterpart will be generated for this enum.
-// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser
-enum TimePeriod {
-  LAST_HOUR = 0,
-  LAST_DAY,
-  LAST_WEEK,
-  FOUR_WEEKS,
-  EVERYTHING,
-  TIME_PERIOD_LAST = EVERYTHING
-};
-
-// Calculate the begin time for the deletion range specified by |time_period|.
-base::Time CalculateBeginDeleteTime(TimePeriod time_period);
-
-}  // namespace browsing_data
-
-#endif  // COMPONENTS_BROWSING_DATA_BROWSING_DATA_UTILS_H_