Convert UserId from user_id.mojom to new Mojo types

This CL converts UserId from user_id.mojom to new Mojo types
using ReceiverSet and PendingReceiver.

Bug: 955171
Change-Id: I15a7b25d0debc781387f8f3dbc9e9ce637fdb6b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1849746Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Julie Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#704894}

services/test/user_id/user_id_service.cc

@@ -10,7 +10,7 @@ namespace user_id {
 UserIdService::UserIdService(service_manager::mojom::ServiceRequest request)
     : service_binding_(this, std::move(request)) {
   registry_.AddInterface<mojom::UserId>(base::BindRepeating(
-      &UserIdService::BindUserIdRequest, base::Unretained(this)));
+      &UserIdService::BindUserIdReceiver, base::Unretained(this)));
 }
 
 UserIdService::~UserIdService() = default;
@@ -22,9 +22,9 @@ void UserIdService::OnBindInterface(
   registry_.BindInterface(interface_name, std::move(interface_pipe));
 }
 
-void UserIdService::BindUserIdRequest(
-    mojom::UserIdRequest request) {
-  bindings_.AddBinding(this, std::move(request));
+void UserIdService::BindUserIdReceiver(
+    mojo::PendingReceiver<mojom::UserId> receiver) {
+  receivers_.Add(this, std::move(receiver));
 }
 
 void UserIdService::GetInstanceGroup(GetInstanceGroupCallback callback) {

services/test/user_id/user_id_service.h

@@ -5,7 +5,8 @@
 #ifndef SERVICES_USER_ID_USER_ID_SERVICE_H_
 #define SERVICES_USER_ID_USER_ID_SERVICE_H_
 
-#include "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/pending_receiver.h"
+#include "mojo/public/cpp/bindings/receiver_set.h"
 #include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/service.h"
 #include "services/service_manager/public/cpp/service_binding.h"
@@ -28,11 +29,11 @@ class UserIdService : public service_manager::Service, public mojom::UserId {
   // mojom::UserId:
   void GetInstanceGroup(GetInstanceGroupCallback callback) override;
 
-  void BindUserIdRequest(mojom::UserIdRequest request);
+  void BindUserIdReceiver(mojo::PendingReceiver<mojom::UserId> receiver);
 
   service_manager::ServiceBinding service_binding_;
   service_manager::BinderRegistry registry_;
-  mojo::BindingSet<mojom::UserId> bindings_;
+  mojo::ReceiverSet<mojom::UserId> receivers_;
 
   DISALLOW_COPY_AND_ASSIGN(UserIdService);
 };