[ServiceWorker] Add EmbeddedWorkerInstanceHost Interface.

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 ca5d522cd3500b0e1719f730a61c9c5a1667bc83..bd600c49be433518cf0d2f3e96df6dd73b39981d 100644
--- a/content/browser/service_worker/embedded_worker_instance.h
+++ b/content/browser/service_worker/embedded_worker_instance.h
@@ -26,6 +26,7 @@
 #include "content/common/service_worker/embedded_worker.mojom.h"
 #include "content/common/service_worker/service_worker_event_dispatcher.mojom.h"
 #include "content/common/service_worker/service_worker_status_code.h"
+#include "mojo/public/cpp/bindings/associated_binding.h"
 #include "url/gurl.h"
 
 // Windows headers will redefine SendMessage.
@@ -46,7 +47,8 @@ class ServiceWorkerContextCore;
 // This gives an interface to control one EmbeddedWorker instance, which
 // may be 'in-waiting' or running in one of the child processes added by
 // AddProcessReference().
-class CONTENT_EXPORT EmbeddedWorkerInstance {
+class CONTENT_EXPORT EmbeddedWorkerInstance
+    : NON_EXPORTED_BASE(public mojom::EmbeddedWorkerInstanceHost) {
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode)> StatusCallback;
 
@@ -99,7 +101,7 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
     CONTENT_EXPORT virtual bool OnMessageReceived(const IPC::Message& message);
   };
 
-  ~EmbeddedWorkerInstance();
+  ~EmbeddedWorkerInstance() override;
 
   // Starts the worker. It is invalid to call this when the worker is not in
   // STOPPED status. |callback| is invoked after the worker script has been
@@ -202,6 +204,11 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   EmbeddedWorkerInstance(base::WeakPtr<ServiceWorkerContextCore> context,
                          int embedded_worker_id);
 
+  // mojom::EmbeddedWorkerInstanceHost
+  // Be called when the worker instance has ack'ed that
+  // it is ready for inspection.
+  void OnReadyForInspection() override;
+
   // Called back from StartTask after a process is allocated on the UI thread.
   void OnProcessAllocated(std::unique_ptr<WorkerProcessHandle> handle,
                           ServiceWorkerMetrics::StartSituation start_situation);
@@ -220,10 +227,6 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   void OnStartWorkerMessageSent();
 
   // Called back from Registry when the worker instance has ack'ed that
-  // it is ready for inspection.
-  void OnReadyForInspection();
-
-  // Called back from Registry when the worker instance has ack'ed that
   // it finished loading the script.
   void OnScriptLoaded();
 
@@ -303,6 +306,9 @@ class CONTENT_EXPORT EmbeddedWorkerInstance {
   // |client_| is used to send messages to the renderer process.
   mojom::EmbeddedWorkerInstanceClientPtr client_;
 
+  // Binding for EmbeddedWorkerInstanceHost, runs on IO thread.
+  mojo::AssociatedBinding<EmbeddedWorkerInstanceHost> instance_host_binding_;
+
   // TODO(shimazu): Remove this after EmbeddedWorkerStartParams is changed to
   // a mojo struct.
   mojom::ServiceWorkerEventDispatcherRequest pending_dispatcher_request_;