ServiceWorker: propagate provider_id to the browser process in .register + int32/int cleanup

content/browser/service_worker/service_worker_context_core.h

Index: content/browser/service_worker/service_worker_context_core.h
diff --git a/content/browser/service_worker/service_worker_context_core.h b/content/browser/service_worker/service_worker_context_core.h
index 967c2143881f6c74e42d68dbca7dbd7e643369ce..7bcca45dac3363bb6fe69a96cdef23a6024f4e13 100644
--- a/content/browser/service_worker/service_worker_context_core.h
+++ b/content/browser/service_worker/service_worker_context_core.h
@@ -74,14 +74,20 @@ class CONTENT_EXPORT ServiceWorkerContextCore
   void RemoveAllProviderHostsForProcess(int process_id);
 
   // The callback will be called on the IO thread.
+  // A child process of |source_process_id| may be used to run the created
+  // worker for initial installation.
+  // Non-null |provider_host| must be given if this is called from a document,
+  // whose process_id() must match with |source_process_id|.
   void RegisterServiceWorker(const GURL& pattern,
                              const GURL& script_url,
                              int source_process_id,
+                             ServiceWorkerProviderHost* provider_host,
                              const RegistrationCallback& callback);
 
   // The callback will be called on the IO thread.
   void UnregisterServiceWorker(const GURL& pattern,
                                int source_process_id,
+                               ServiceWorkerProviderHost* provider_host,
                                const UnregistrationCallback& callback);
 
   // This class maintains collections of live instances, this class