Add two interfaces for ServiceWorkerProviderContext/ProviderHost

content/child/service_worker/service_worker_provider_context.h

Index: content/child/service_worker/service_worker_provider_context.h
diff --git a/content/child/service_worker/service_worker_provider_context.h b/content/child/service_worker/service_worker_provider_context.h
index 192be968692b86a8b7e28e4e62823dd9cc1015ae..26c8c0ef0485638c27e95403d1d0f34ee96383ff 100644
--- a/content/child/service_worker/service_worker_provider_context.h
+++ b/content/child/service_worker/service_worker_provider_context.h
@@ -13,7 +13,9 @@
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/common/content_export.h"
+#include "content/common/service_worker/service_worker_provider_interfaces.mojom.h"
 #include "content/common/service_worker/service_worker_types.h"
+#include "mojo/public/cpp/bindings/associated_binding.h"
 
 namespace base {
 class SingleThreadTaskRunner;
@@ -44,11 +46,19 @@ class ThreadSafeSender;
 // ControlleeDelegate and ControllerDelegate.
 class CONTENT_EXPORT ServiceWorkerProviderContext
     : public base::RefCountedThreadSafe<ServiceWorkerProviderContext,
-                                        ServiceWorkerProviderContextDeleter> {
+                                        ServiceWorkerProviderContextDeleter>,
+      NON_EXPORTED_BASE(public mojom::ServiceWorkerProvider) {
  public:
-  ServiceWorkerProviderContext(int provider_id,
-                               ServiceWorkerProviderType provider_type,
-                               ThreadSafeSender* thread_safe_sender);
+  // |provider_id| specifies which host will receive the message from this
+  // provider. |provider_type| changes the behavior of this provider
+  // context. |request| is an endpoint which is connected to
+  // content::ServiceWorkerProviderHost which notifies changes of the
+  // registration's and workers' status. |request| is bound with |binding_|.
+  ServiceWorkerProviderContext(
+      int provider_id,
+      ServiceWorkerProviderType provider_type,
+      mojom::ServiceWorkerProviderAssociatedRequest request,
+      ThreadSafeSender* thread_safe_sender);
 
   // Called from ServiceWorkerDispatcher.
   void OnAssociateRegistration(
@@ -84,12 +94,16 @@ class CONTENT_EXPORT ServiceWorkerProviderContext
   class ControlleeDelegate;
   class ControllerDelegate;
 
-  ~ServiceWorkerProviderContext();
+  ~ServiceWorkerProviderContext() override;
   void DestructOnMainThread() const;
 
   const int provider_id_;
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
+  // Mojo binding for the |request| passed to the constructor. This keeps the
+  // connection to the content::ServiceWorkerProviderHost in the browser process
+  // alive.
+  mojo::AssociatedBinding<mojom::ServiceWorkerProvider> binding_;
 
   std::unique_ptr<Delegate> delegate_;