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

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index ecffaca878c414174b0822effb9f8cd1e1c12c04..58bb07218b8ad3b91150e0f494bab37f154f8ae6 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -42,6 +42,7 @@ class ServiceWorkerContextWrapper;
 class ServiceWorkerDatabaseTaskManager;
 class ServiceWorkerHandle;
 class ServiceWorkerJobCoordinator;
+class ServiceWorkerMojoEventDispatcher;
 class ServiceWorkerProviderHost;
 class ServiceWorkerRegistration;
 class ServiceWorkerStorage;
@@ -207,6 +208,14 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   void ProtectVersion(const scoped_refptr<ServiceWorkerVersion>& version);
   void UnprotectVersion(int64 version_id);
 
+  // This class maintains a collection of mojo event dispatchers. This class
+  // does not own these object or influence their lifetime.
+  ServiceWorkerMojoEventDispatcher* GetMojoEventDispatcher(
+      int render_process_id);
+  void AddMojoEventDispatcher(
+      ServiceWorkerMojoEventDispatcher* mojo_event_dispatcher);
+  void RemoveMojoEventDispatcher(int render_process_id);
+
   // Returns new context-local unique ID.
   int GetNewServiceWorkerHandleId();
   int GetNewRegistrationHandleId();
@@ -234,6 +243,8 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   friend class ServiceWorkerContext;
   typedef std::map<int64, ServiceWorkerRegistration*> RegistrationsMap;
   typedef std::map<int64, ServiceWorkerVersion*> VersionMap;
+  typedef std::map<int64, ServiceWorkerMojoEventDispatcher*>
+      MojoEventDispatcherMap;
 
   ProviderMap* GetProviderMapForProcess(int process_id) {
     return providers_->Lookup(process_id);
@@ -267,6 +278,7 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   std::map<int64, ServiceWorkerRegistration*> live_registrations_;
   std::map<int64, ServiceWorkerVersion*> live_versions_;
   std::map<int64, scoped_refptr<ServiceWorkerVersion>> protected_versions_;
+  std::map<int64, ServiceWorkerMojoEventDispatcher*> mojo_event_dispatchers_;
   int next_handle_id_;
   int next_registration_handle_id_;
   scoped_refptr<base::ObserverListThreadSafe<ServiceWorkerContextObserver>>