[Offline Pages] Introducing StorageManagerClient interface.

components/offline_pages/offline_page_model.cc

 // Copyright 2015 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/offline_page_model.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 528 matching lines @@
 }
 
 OfflinePageStorageManager* OfflinePageModel::GetStorageManager() {
   return storage_manager_.get();
 }
 
 bool OfflinePageModel::is_loaded() const {
   return is_loaded_;
 }
 
+// Implementation of StorageManagerClient.
+bool OfflinePageModel::IsLoaded() const {
+  return is_loaded();
+}
+
 void OfflinePageModel::OnCreateArchiveDone(const GURL& requested_url,
                                            int64_t offline_id,
                                            const ClientId& client_id,
                                            const base::Time& start_time,
                                            const SavePageCallback& callback,
                                            OfflinePageArchiver* archiver,
                                            ArchiverResult archiver_result,
                                            const GURL& url,
                                            const base::FilePath& file_path,
                                            int64_t file_size) {
@@ skipping 272 matching lines @@
 void OfflinePageModel::RunWhenLoaded(const base::Closure& task) {
   if (!is_loaded_) {
     delayed_tasks_.push_back(task);
     return;
   }
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, task);
 }
 
 }  // namespace offline_pages