WIP attempt to replace StartWorker/StopWorker IPCs with a new mojo EmbeddedWorker service.

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 5993a40c93fd20fdf5aa85f8c356ab40596029dc..8c5886cefe75eb0a2546e09e2d64f33c540dea84 100644
--- a/content/browser/service_worker/embedded_worker_instance.h
+++ b/content/browser/service_worker/embedded_worker_instance.h
@@ -19,6 +19,7 @@
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "content/common/content_export.h"
+#include "content/common/service_worker/embedded_worker.mojom.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "url/gurl.h"
 
@@ -27,8 +28,6 @@
 #undef SendMessage
 #endif
 
-struct EmbeddedWorkerMsg_StartWorker_Params;
-
 namespace IPC {
 class Message;
 }
@@ -163,19 +162,19 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   static void RunProcessAllocated(
       base::WeakPtr<EmbeddedWorkerInstance> instance,
       base::WeakPtr<ServiceWorkerContextCore> context,
-      scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+      EmbeddedWorkerStartWorkerParamsPtr params,
       const EmbeddedWorkerInstance::StatusCallback& callback,
       ServiceWorkerStatusCode status,
       int process_id,
       bool is_new_process);
-  void ProcessAllocated(scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+  void ProcessAllocated(EmbeddedWorkerStartWorkerParamsPtr params,
                         const StatusCallback& callback,
                         int process_id,
                         bool is_new_process,
                         ServiceWorkerStatusCode status);
   // Called back after ProcessAllocated() passes control to the UI thread to
   // register to WorkerDevToolsManager.
-  void SendStartWorker(scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+  void SendStartWorker(EmbeddedWorkerStartWorkerParamsPtr params,
                        const StatusCallback& callback,
                        bool is_new_process,
                        int worker_devtools_agent_route_id,
@@ -242,6 +241,7 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   int process_id_;
   int thread_id_;
   scoped_ptr<ServiceRegistryImpl> service_registry_;
+  EmbeddedWorkerPtr worker_;
 
   // Whether devtools is attached or not.
   bool devtools_attached_;