[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 0df89e51ad5a2016798e53e152c8855bbc46bfa3..0cf2fdeda3140c4635ff05743c3e59349be63435 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(){};
@@ -49,7 +45,7 @@ class RequestQueueStore {
 
   // Asynchronously updates requests in store.
   virtual void UpdateRequests(const std::vector<SavePageRequest>& requests,
-                              const RequestQueue::UpdateCallback& callback) = 0;
+                              const UpdateCallback& callback) = 0;
 
   // Asynchronously removes requests from the store using their IDs.
   // Result of the update, and a number of removed pages is passed in the
@@ -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;