[OfflinePages] Fixes RequestCoordinator bug not clearing state on timeout

components/offline_pages/background/request_coordinator.h

 // Copyright 2016 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_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_
 #define COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 276 matching lines @@
   // started.
   void StartOffliner(int64_t request_id,
                      const std::string& client_namespace,
                      std::unique_ptr<UpdateRequestsResult> update_result);
 
   // Called by the offliner when an offlining request is completed. (and by
   // tests).
   void OfflinerDoneCallback(const SavePageRequest& request,
                             Offliner::RequestStatus status);
 
+  // Records a completed attempt for the request and update it in the queue
+  // (possibly removing it).
+  void UpdateRequestForCompletedAttempt(const SavePageRequest& request,
+                                        Offliner::RequestStatus status);
+
+  // Returns whether we should try another request based on the outcome
+  // of the previous one.
+  bool ShouldTryNextRequest(Offliner::RequestStatus previous_request_status);
+
   void TryNextRequest();
 
   // If there is an active request in the list, cancel that request.
   bool CancelActiveRequestIfItMatches(const std::vector<int64_t>& request_ids);
 
   // Records an aborted attempt for the request and update it in the queue
-  // (possibly removing it). Returns the updated copy.
-  void AbortRequestAttempt(const SavePageRequest& request);
+  // (possibly removing it).
+  void UpdateRequestForAbortedAttempt(const SavePageRequest& request);
 
   // Remove the attempted request from the queue with status to pass through to
   // any observers and UMA histogram.
   void RemoveAttemptedRequest(const SavePageRequest& request,
                               BackgroundSavePageResult status);
 
   // Completes aborting the request, reports an error if it fails.
   void MarkAttemptAbortedDone(int64_t request_id,
                               const ClientId& client_id,
                               std::unique_ptr<UpdateRequestsResult> result);
@@ skipping 74 matching lines @@
   base::Callback<void(bool)> immediate_schedule_callback_;
   // Allows us to pass a weak pointer to callbacks.
   base::WeakPtrFactory<RequestCoordinator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestCoordinator);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_