Connect BackgroundFetch to the OfflineItemCollection

content/browser/background_fetch/background_fetch_context.h

Index: content/browser/background_fetch/background_fetch_context.h
diff --git a/content/browser/background_fetch/background_fetch_context.h b/content/browser/background_fetch/background_fetch_context.h
index 66df7e17334923b8695ddcf291707db54fbed061..0d9ed555e63d25999f792e2882e0a1425015c199 100644
--- a/content/browser/background_fetch/background_fetch_context.h
+++ b/content/browser/background_fetch/background_fetch_context.h
@@ -25,6 +25,7 @@ class Origin;
 
 namespace content {
 
+class BackgroundFetchClientProxy;
 class BackgroundFetchDataManager;
 class BackgroundFetchEventDispatcher;
 class BackgroundFetchJobController;
@@ -68,6 +69,21 @@ class CONTENT_EXPORT BackgroundFetchContext
       const BackgroundFetchOptions& options,
       const blink::mojom::BackgroundFetchService::FetchCallback& callback);
 
+  // Cleans up all Background Fetch operations whether in progress or completed.
+  void CleanupAllTasks();
+
+  // Cancels the Background Fetch for the |registration_id| and triggers the
+  // 'backgroundfetchabort' event to be sent to the associated service worker.
+  void CancelFetch(const BackgroundFetchRegistrationId& registration_id);
+
+  // Pauses the Background Fetch for the |registration_id|. If the fetch was
+  // already paused, this has no effect.
+  void PauseFetch(const BackgroundFetchRegistrationId& registration_id);
+
+  // Resumes the previously paused Background Fetch for the |registration_id|.
+  // If the fetch was not paused, this has no effect.
+  void ResumeFetch(const BackgroundFetchRegistrationId& registration_id);
+
   // Returns a vector with the tags of the active fetches for the given |origin|
   // and |service_worker_registration_id|.
   std::vector<std::string> GetActiveTagsForServiceWorkerRegistration(
@@ -135,6 +151,9 @@ class CONTENT_EXPORT BackgroundFetchContext
            std::unique_ptr<BackgroundFetchJobController>>
       active_fetches_;
 
+  // The proxy will dispatch BackgroundFetchClient calls to the UI thread.
+  std::unique_ptr<BackgroundFetchClientProxy> client_proxy_;
+
   DISALLOW_COPY_AND_ASSIGN(BackgroundFetchContext);
 };