Changes to fit better with the needs of the download manager.

components/offline_pages/background/request_queue.h

Index: components/offline_pages/background/request_queue.h
diff --git a/components/offline_pages/background/request_queue.h b/components/offline_pages/background/request_queue.h
index 429c3757b89acc1cec1d65eb7cab9bc9fc604378..28c95794aac0ffe3c4e82a45ed80c78d58f474f5 100644
--- a/components/offline_pages/background/request_queue.h
+++ b/components/offline_pages/background/request_queue.h
@@ -74,14 +74,10 @@ class RequestQueue {
   void UpdateRequest(const SavePageRequest& request,
                      const UpdateRequestCallback& callback);
 
-  // Removes the request matching the |request_id|. Result is returned through
+  // Removes the requests matching the |request_ids|. Result is returned through

[Dmitry Titov, 2016/08/10 02:52:14]

This returns result from UpdateRequestResult. That enum assumes one request. Now
that there are many, perhaps enum should be changed and comment updated for
partial success/failure, as in: *some* ids did not map to existing requests.
Also, in that case we should wither delete all that do map, or don't delete
enything. 

[Pete Williamson, 2016/08/10 21:15:25]

OK, changed the callback to return an array of statuses (along with a matching
array of request ids) so the client can tell what didn't get removed, if they
care.  The client will also be getting notifications eventually for items that
do get removed.

   // |callback|.
-  void RemoveRequest(int64_t request_id, const UpdateRequestCallback& callback);
-
-  // Removes the requests matching the |client_ids|. Results are returned
-  // through |callback|.
-  void RemoveRequestsByClientId(const std::vector<ClientId>& client_id,
-                                const UpdateRequestCallback& callback);
+  void RemoveRequests(const std::vector<int64_t>& request_ids,
+                      const UpdateRequestCallback& callback);
 
   void GetForUpdateDone(
       const RequestQueue::UpdateRequestCallback& update_callback,