Add calls to the offliner and unit tests.

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 "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/keyed_service/core/keyed_service.h"
+#include "components/offline_pages/background/offliner.h"
 #include "components/offline_pages/background/request_queue.h"
 #include "url/gurl.h"
 
 namespace offline_pages {
 
 struct ClientId;
 class OfflinerPolicy;
 class OfflinerFactory;
 class Offliner;
 class SavePageRequest;
@@ skipping 27 matching lines @@
   // caller to abort processing; otherwise, processing will complete on
   // its own. In either case, the callback will be called when processing
   // is stopped or complete.
   void StopProcessing();
 
   // Returns the request queue used for requests.  Coordinator keeps ownership.
   RequestQueue* GetQueue() { return queue_.get(); }
 
   Scheduler* GetSchedulerForTesting() { return scheduler_.get(); }
 
+  // Returns the status of the most recent offlining.
+  Offliner::CompletionStatus last_offlining_status() {
+    return last_offlining_status_;
+  }
+
  private:
   void AddRequestResultCallback(RequestQueue::AddRequestResult result,
                                 const SavePageRequest& request);
-  // OfflinerPolicy.  Used to store policies. Owned.
+
+  void SendRequestToOffliner(SavePageRequest& request);
+
+  void OfflinerDoneCallback(const SavePageRequest& request,
+                            Offliner::CompletionStatus status);
+
+  // RequestCoordinator takes over ownership of the policy
   std::unique_ptr<OfflinerPolicy> policy_;
   // OfflinerFactory.  Used to create offline pages. Owned.
   std::unique_ptr<OfflinerFactory> factory_;
   // RequestQueue.  Used to store incoming requests. Owned.
   std::unique_ptr<RequestQueue> queue_;
   // Scheduler. Used to request a callback when network is available.  Owned.
   std::unique_ptr<Scheduler> scheduler_;
+  // Status of the most recent offlining.
+  Offliner::CompletionStatus last_offlining_status_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestCoordinator);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_REQUEST_COORDINATOR_H_