Add a mojo ServiceRegistry to embedded workers.

content/renderer/service_worker/service_worker_context_client.h

Index: content/renderer/service_worker/service_worker_context_client.h
diff --git a/content/renderer/service_worker/service_worker_context_client.h b/content/renderer/service_worker/service_worker_context_client.h
index 9dfb01deb27e3e41dafceb3af3a9034a847aafe3..970480d2705f089a28cf29737b84dd9f0dde3d1a 100644
--- a/content/renderer/service_worker/service_worker_context_client.h
+++ b/content/renderer/service_worker/service_worker_context_client.h
@@ -17,6 +17,7 @@
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "ipc/ipc_listener.h"
+#include "mojo/application/public/interfaces/service_provider.mojom.h"
 #include "third_party/WebKit/public/platform/WebGeofencingEventType.h"
 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerError.h"
@@ -71,6 +72,13 @@ class ServiceWorkerContextClient
                          int embedded_worker_id,
                          const IPC::Message& message);
 
+  // Called some time after the worker has started. Attempts to use the
+  // ServiceRegistry to connect to services before this method is called are
+  // queued up and will resolve after this method is called.
+  void BindServiceRegistry(
+      mojo::InterfaceRequest<mojo::ServiceProvider> services,
+      mojo::ServiceProviderPtr exposed_services);
+
   // WebServiceWorkerContextClient overrides.
   virtual blink::WebURL scope() const;
   virtual void getClients(const blink::WebServiceWorkerClientQueryOptions&,