[ServiceWorker] Mojofy extendable message event.

content/common/service_worker/service_worker_event_dispatcher.mojom

Index: content/common/service_worker/service_worker_event_dispatcher.mojom
diff --git a/content/common/service_worker/service_worker_event_dispatcher.mojom b/content/common/service_worker/service_worker_event_dispatcher.mojom
index 7a17c5ffc97cbe1da16a5c309247a4fa822a6e16..3d1b1ce5daad1ad97198560d8759148d4eda3d60 100644
--- a/content/common/service_worker/service_worker_event_dispatcher.mojom
+++ b/content/common/service_worker/service_worker_event_dispatcher.mojom
@@ -8,15 +8,27 @@ import "content/common/url_loader.mojom";
 import "mojo/common/common_custom_types.mojom";
 import "third_party/WebKit/public/platform/modules/background_sync/background_sync.mojom";
 import "third_party/WebKit/public/platform/modules/serviceworker/service_worker_event_status.mojom";
+import "url/mojo/origin.mojom";
 
 [Native]
 struct ServiceWorkerFetchRequest;
 
+[Native]
+struct ExtendableMessageEventSource;
+
 struct FetchEventPreloadHandle {
   URLLoader url_loader;
   URLLoaderClient& url_loader_client_request;
 };
 
+struct ExtendableMessageEvent {
+  mojo.common.mojom.String16 message;
+  url.mojom.Origin source_origin;
+  array<int32> message_ports;
+  array<int32> new_routing_ids;
+  ExtendableMessageEventSource source;
+};
+
 // Renderer-side interface bound to ServiceWorkerContextClient for dispatching
 // events.
 interface ServiceWorkerEventDispatcher {
@@ -32,4 +44,7 @@ interface ServiceWorkerEventDispatcher {
                     blink.mojom.BackgroundSyncEventLastChance last_chance)
       => (blink.mojom.ServiceWorkerEventStatus status,
           mojo.common.mojom.Time dispatch_event_time);
+  DispatchExtendableMessageEvent(ExtendableMessageEvent event)
+      => (blink.mojom.ServiceWorkerEventStatus status,
+          mojo.common.mojom.Time dispatch_event_time);
 };