Fix the Download Notifications for Offline Pages to indicate bytes loaded.

components/offline_pages/core/background/cleanup_task_unittest.cc

 // 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.
 
 #include "components/offline_pages/core/background/cleanup_task.h"
 
 #include <memory>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 40 matching lines @@
   void NotifyAdded(const SavePageRequest& request) override {}
   void NotifyChanged(const SavePageRequest& request) override {}
 
   void NotifyCompleted(const SavePageRequest& request,
                        BackgroundSavePageResult status) override {
     last_expired_request_ = request;
     last_request_expiration_status_ = status;
     total_expired_requests_++;
   }
 
+  void NotifyNetworkProgress(const SavePageRequest& request,
+                             int64_t received_bytes) override {}
+
   const SavePageRequest& last_expired_request() {
     return last_expired_request_;
   }
 
   RequestCoordinator::BackgroundSavePageResult
   last_request_expiration_status() {
     return last_request_expiration_status_;
   }
 
   int32_t total_expired_requests() { return total_expired_requests_; }
@@ skipping 199 matching lines @@
   // though it is expired because it was listed as in-progress while cleaning.
   // Request2 should have been cleaned out of the queue.
   store()->GetRequests(base::Bind(&CleanupTaskTest::GetRequestsCallback,
                                   base::Unretained(this)));
   PumpLoop();
   EXPECT_EQ(1UL, found_requests().size());
   EXPECT_EQ(kRequestId1, found_requests().at(0)->request_id());
 }
 
 }  // namespace offline_pages