Add support for time based deletion of browsing data on iOS

components/signin/ios/browser/account_consistency_service.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 COMPONENTS_SIGNIN_IOS_BROWSER_ACCOUNT_CONSISTENCY_SERVICE_H_
 #define COMPONENTS_SIGNIN_IOS_BROWSER_ACCOUNT_CONSISTENCY_SERVICE_H_
 
 #include <deque>
 #include <map>
 #include <memory>
@@ skipping 60 matching lines @@
   // cookie is already on |domain|, this function will do nothing unless
   // |force_update_if_too_old| is true. In this case, the cookie will be
   // refreshed if it is considered too old.
   void AddChromeConnectedCookieToDomain(const std::string& domain,
                                         bool force_update_if_too_old);
 
   // Enqueues a request to remove the CHROME_CONNECTED cookie to |domain|.
   // Does nothing if the cookie is not set on |domain|.
   void RemoveChromeConnectedCookieFromDomain(const std::string& domain);
 
-  // Notifies the AccountConsistencyService that browsing data has been removed.
+  // Notifies the AccountConsistencyService that browsing data has been removed
+  // for any time period.
   void OnBrowsingDataRemoved();
 
  private:
   friend class AccountConsistencyServiceTest;
 
   // The type of a cookie request.
   enum CookieRequestType {
     ADD_CHROME_CONNECTED_COOKIE,
     REMOVE_CHROME_CONNECTED_COOKIE
   };
@@ skipping 93 matching lines @@
 
   // Handlers reacting on GAIA responses with the X-Chrome-Manage-Accounts
   // header set.
   std::map<web::WebState*, std::unique_ptr<web::WebStatePolicyDecider>>
       web_state_handlers_;
 
   DISALLOW_COPY_AND_ASSIGN(AccountConsistencyService);
 };
 
 #endif  // COMPONENTS_SIGNIN_IOS_BROWSER_ACCOUNT_CONSISTENCY_SERVICE_H_