[Background Sync] Use Mojo IPC to fire background sync events

content/browser/service_worker/service_worker_version.h

Index: content/browser/service_worker/service_worker_version.h
diff --git a/content/browser/service_worker/service_worker_version.h b/content/browser/service_worker/service_worker_version.h
index d77ed99202c02013e012641c7be48c86996778c0..8194e6dcc9efafa8f70eb075fab62adf9c5842b4 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -21,6 +21,7 @@
 #include "base/timer/timer.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/service_worker_script_cache_map.h"
+#include "content/common/background_sync_service.mojom.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
@@ -46,6 +47,7 @@ namespace content {
 
 class EmbeddedWorkerRegistry;
 class ServiceWorkerContextCore;
+class ServiceWorkerMojoEventDispatcher;
 class ServiceWorkerProviderHost;
 class ServiceWorkerRegistration;
 class ServiceWorkerURLRequestJob;
@@ -354,7 +356,6 @@ class CONTENT_EXPORT ServiceWorkerVersion
     REQUEST_ACTIVATE,
     REQUEST_INSTALL,
     REQUEST_FETCH,
-    REQUEST_SYNC,
     REQUEST_NOTIFICATION_CLICK,
     REQUEST_PUSH,
     REQUEST_GEOFENCING,
@@ -393,6 +394,10 @@ class CONTENT_EXPORT ServiceWorkerVersion
                               const GURL& source_url) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
+  // Handle callbacks from background sync events
+  void OnSyncEventFinished(const StatusCallback& callback,
+                           ServiceWorkerStatusCode status);
+
   void OnStartSentAndScriptEvaluated(ServiceWorkerStatusCode status);
 
   void DispatchInstallEventAfterStartWorker(const StatusCallback& callback);
@@ -416,8 +421,6 @@ class CONTENT_EXPORT ServiceWorkerVersion
   void OnFetchEventFinished(int request_id,
                             ServiceWorkerFetchEventResult result,
                             const ServiceWorkerResponse& response);
-  void OnSyncEventFinished(int request_id,
-                           blink::WebServiceWorkerEventResult result);
   void OnNotificationClickEventFinished(int request_id);
   void OnPushEventFinished(int request_id,
                            blink::WebServiceWorkerEventResult result);
@@ -490,6 +493,8 @@ class CONTENT_EXPORT ServiceWorkerVersion
   // and records metrics about startup.
   void RecordStartWorkerResult(ServiceWorkerStatusCode status);
 
+  void StopIfRedundant();
+
   template <typename IDMAP>
   void RemoveCallbackAndStopIfRedundant(IDMAP* callbacks, int request_id);
 
@@ -523,7 +528,6 @@ class CONTENT_EXPORT ServiceWorkerVersion
   IDMap<StatusCallback, IDMapOwnPointer> activate_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> install_callbacks_;
   IDMap<FetchCallback, IDMapOwnPointer> fetch_callbacks_;
-  IDMap<StatusCallback, IDMapOwnPointer> sync_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> notification_click_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> push_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> geofencing_callbacks_;
@@ -568,6 +572,8 @@ class CONTENT_EXPORT ServiceWorkerVersion
   scoped_ptr<PingController> ping_controller_;
   scoped_ptr<Metrics> metrics_;
 
+  scoped_refptr<ServiceWorkerMojoEventDispatcher> mojo_event_dispatcher_;
+
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);