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 41c9e7fd739a5f00c4b8e7e99f540f94458749ea..b9e9e5f3df980ac82b9c298ac408f929529e8498 100644
--- a/content/browser/background_fetch/background_fetch_context.h
+++ b/content/browser/background_fetch/background_fetch_context.h
@@ -16,6 +16,7 @@
 
 namespace content {
 
+class BackgroundFetchClientProxy;
 class BackgroundFetchDataManager;
 class BackgroundFetchJobController;
 struct BackgroundFetchOptions;
@@ -52,6 +53,18 @@ class CONTENT_EXPORT BackgroundFetchContext
       const BackgroundFetchOptions& options,
       const blink::mojom::BackgroundFetchService::FetchCallback& callback);
 
+  // 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);
+
  private:
   friend class base::DeleteHelper<BackgroundFetchContext>;
   friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
@@ -91,6 +104,9 @@ 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);
 };