[Offline pages] Updating RequestQueue::RemoveRequests to use a TaskQueue

components/offline_pages/background/request_queue_store.h

Index: components/offline_pages/background/request_queue_store.h
diff --git a/components/offline_pages/background/request_queue_store.h b/components/offline_pages/background/request_queue_store.h
index 950f1ec8a1bcb51a8656cf301c41307af994fc5c..b661ea0faae1341c06c30b99d709ba70acb44138 100644
--- a/components/offline_pages/background/request_queue_store.h
+++ b/components/offline_pages/background/request_queue_store.h
@@ -31,10 +31,6 @@ class RequestQueueStore {
       std::vector<std::unique_ptr<SavePageRequest>> /* requests */)>
       GetRequestsCallback;
   typedef base::Callback<void(ItemActionStatus)> AddCallback;
-  typedef base::Callback<void(
-      const RequestQueue::UpdateMultipleRequestResults& /* statuses */,
-      std::vector<std::unique_ptr<SavePageRequest>> /* requests */)>
-      RemoveCallback;
   typedef base::Callback<void(bool /* success */)> ResetCallback;
 
   virtual ~RequestQueueStore(){};
@@ -57,7 +53,7 @@ class RequestQueueStore {
   // Result of remove should be false, when one of the provided items couldn't
   // be deleted, e.g. because it was missing.
   virtual void RemoveRequests(const std::vector<int64_t>& request_ids,
-                              const RemoveCallback& callback) = 0;
+                              const UpdateCallback& callback) = 0;
 
   // Resets the store.
   virtual void Reset(const ResetCallback& callback) = 0;