Add a mojo ServiceRegistry to embedded workers.

content/browser/service_worker/embedded_worker_instance.h

Index: content/browser/service_worker/embedded_worker_instance.h
diff --git a/content/browser/service_worker/embedded_worker_instance.h b/content/browser/service_worker/embedded_worker_instance.h
index f0f34314edd537b471a438ff7cbd874b18d12f16..5993a40c93fd20fdf5aa85f8c356ab40596029dc 100644
--- a/content/browser/service_worker/embedded_worker_instance.h
+++ b/content/browser/service_worker/embedded_worker_instance.h
@@ -37,6 +37,8 @@ namespace content {
 
 class EmbeddedWorkerRegistry;
 class MessagePortMessageFilter;
+class ServiceRegistry;
+class ServiceRegistryImpl;
 class ServiceWorkerContextCore;
 struct ServiceWorkerFetchRequest;
 
@@ -118,6 +120,10 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   // status.
   ServiceWorkerStatusCode SendMessage(const IPC::Message& message);
 
+  // Returns the ServiceRegistry for this worker. It is invalid to call this
+  // when the worker is not in STARTING or RUNNING status.
+  ServiceRegistry* GetServiceRegistry();
+
   int embedded_worker_id() const { return embedded_worker_id_; }
   Status status() const { return status_; }
   StartingPhase starting_phase() const {
@@ -235,6 +241,7 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   // Current running information. -1 indicates the worker is not running.
   int process_id_;
   int thread_id_;
+  scoped_ptr<ServiceRegistryImpl> service_registry_;
 
   // Whether devtools is attached or not.
   bool devtools_attached_;