Dispatch a bare Service Worker event for a finished Background Fetch

content/browser/background_fetch/background_fetch_context.h

 // Copyright 2017 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 CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONTEXT_H_
 #define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONTEXT_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/WebKit/public/platform/modules/background_fetch/background_fetch.mojom.h"
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace url {
 class Origin;
 }
 
 namespace content {
 
 class BackgroundFetchDataManager;
+class BackgroundFetchEventDispatcher;
 class BackgroundFetchJobController;
 struct BackgroundFetchOptions;
 class BackgroundFetchRegistrationId;
 class BackgroundFetchRequestInfo;
+class BlobHandle;
 class BrowserContext;
 class ServiceWorkerContextWrapper;
 struct ServiceWorkerFetchRequest;
 class StoragePartitionImpl;
 
 // The BackgroundFetchContext is the central moderator of ongoing background
 // fetch requests from the Mojo service and from other callers.
 // Background Fetch requests function similar to normal fetches except that
 // they are persistent across Chromium or service worker shutdown.
 class CONTENT_EXPORT BackgroundFetchContext
     : public base::RefCountedThreadSafe<BackgroundFetchContext,
                                         BrowserThread::DeleteOnUIThread> {
  public:
   // The BackgroundFetchContext will watch the ServiceWorkerContextWrapper so
   // that it can respond to service worker events such as unregister.
-  BackgroundFetchContext(
-      BrowserContext* browser_context,
-      StoragePartitionImpl* storage_partition,
-      const scoped_refptr<ServiceWorkerContextWrapper>& context);
+  BackgroundFetchContext(BrowserContext* browser_context,
+                         StoragePartitionImpl* storage_partition,
+                         scoped_refptr<ServiceWorkerContextWrapper> context);
 
   // Shutdown must be called before deleting this. Call on the UI thread.
   void Shutdown();
 
   // Starts a Background Fetch for the |registration_id|. The |requests| will be
   // asynchronously fetched. The |callback| will be invoked when the fetch has
   // been registered, or an error occurred that avoids it from doing so.
   void StartFetch(
       const BackgroundFetchRegistrationId& registration_id,
       const std::vector<ServiceWorkerFetchRequest>& requests,
@@ skipping 30 matching lines @@
       std::vector<BackgroundFetchRequestInfo> initial_requests);
 
   // Called when a new registration has been created by the data manager.
   void DidCreateRegistration(
       const BackgroundFetchRegistrationId& registration_id,
       const BackgroundFetchOptions& options,
       const blink::mojom::BackgroundFetchService::FetchCallback& callback,
       blink::mojom::BackgroundFetchError error,
       std::vector<BackgroundFetchRequestInfo> initial_requests);
 
-  // Called when a the given |controller| has finished processing its job.
+  // Called when the given |controller| has finished processing its job.
   void DidCompleteJob(BackgroundFetchJobController* controller);
 
+  // Called when the sequence of settled fetches for |registration_id| have been
+  // retrieved from storage, and the Service Worker event can be invoked.
+  void DidGetSettledFetches(
+      const BackgroundFetchRegistrationId& registration_id,
+      blink::mojom::BackgroundFetchError error,
+      std::vector<BackgroundFetchSettledFetch> settled_fetches,
+      std::vector<std::unique_ptr<BlobHandle>> blob_handles);
+
+  // Called when all processing for the |registration_id| has been finished and
+  // the job, including its associated data, is ready to be deleted.
+  void DeleteRegistration(const BackgroundFetchRegistrationId& registration_id);
+
   // |this| is owned, indirectly, by the BrowserContext.
   BrowserContext* browser_context_;
 
-  scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 
-  std::unique_ptr<BackgroundFetchDataManager> background_fetch_data_manager_;
+  std::unique_ptr<BackgroundFetchDataManager> data_manager_;
+  std::unique_ptr<BackgroundFetchEventDispatcher> event_dispatcher_;
 
   // Map of the Background Fetch fetches that are currently in-progress.
   std::map<BackgroundFetchRegistrationId,
            std::unique_ptr<BackgroundFetchJobController>>
       active_fetches_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundFetchContext);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONTEXT_H_