Add support for time based deletion of browsing data on iOS

ios/chrome/browser/browsing_data/ios_chrome_browsing_data_remover.h

 // 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 IOS_CHROME_BROWSER_BROWSING_DATA_IOS_CHROME_BROWSING_DATA_REMOVER_H_
 #define IOS_CHROME_BROWSER_BROWSING_DATA_IOS_CHROME_BROWSING_DATA_REMOVER_H_
 
 #include <memory>
 #include <set>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/time/time.h"
+#include "components/browsing_data/core/browsing_data_utils.h"
 #include "components/prefs/pref_member.h"
 #include "components/search_engines/template_url_service.h"
 #include "url/gurl.h"
 #include "url/origin.h"
 
 namespace ios {
 class ChromeBrowserState;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 // IOSChromeBrowsingDataRemover is responsible for removing data related to
 // browsing: visits in url database, downloads, cookies ...
 
 class IOSChromeBrowsingDataRemover {
  public:
-  // Time period ranges available when doing browsing data removals.
-  enum TimePeriod { EVERYTHING };
-
   // Mask used for Remove.
   enum RemoveDataMask {
     REMOVE_APPCACHE = 1 << 0,
     REMOVE_CACHE = 1 << 1,
     REMOVE_COOKIES = 1 << 2,
     REMOVE_DOWNLOADS = 1 << 3,
     REMOVE_FORM_DATA = 1 << 4,
     // In addition to visits, REMOVE_HISTORY removes keywords and last session.
     REMOVE_HISTORY = 1 << 5,
     REMOVE_INDEXEDDB = 1 << 6,
@@ skipping 63 matching lines @@
   using Callback = base::Callback<void(const NotificationDetails&)>;
   using CallbackSubscription = std::unique_ptr<
       base::CallbackList<void(const NotificationDetails&)>::Subscription>;
 
   // Creates a IOSChromeBrowsingDataRemover bound to a specific period of time
   // (as defined via a TimePeriod). Returns a raw pointer, as
   // IOSChromeBrowsingDataRemover retains ownership of itself, and deletes
   // itself once finished.
   static IOSChromeBrowsingDataRemover* CreateForPeriod(
       ios::ChromeBrowserState* browser_state,
-      TimePeriod period);
-
-  // Calculate the begin time for the deletion range specified by |time_period|.
-  static base::Time CalculateBeginDeleteTime(TimePeriod time_period);
+      browsing_data::TimePeriod period);
 
   // Is the IOSChromeBrowsingDataRemover currently in the process of removing
   // data?
   static bool is_removing() { return is_removing_; }
 
   // Add a callback to the list of callbacks to be called during a browsing data
   // removal event. Returns a subscription object that can be used to
   // un-register the callback.
   static CallbackSubscription RegisterOnBrowsingDataRemovedCallback(
       const Callback& callback);
@@ skipping 126 matching lines @@
 
   // Used if we need to clear history.
   base::CancelableTaskTracker history_task_tracker_;
 
   std::unique_ptr<TemplateURLService::Subscription> template_url_sub_;
 
   DISALLOW_COPY_AND_ASSIGN(IOSChromeBrowsingDataRemover);
 };
 
 #endif  // IOS_CHROME_BROWSER_BROWSING_DATA_IOS_CHROME_BROWSING_DATA_REMOVER_H_