Add RegisterService, split out of Connect().

content/common/service_manager/child_connection.cc

Index: content/common/service_manager/child_connection.cc
diff --git a/content/common/service_manager/child_connection.cc b/content/common/service_manager/child_connection.cc
index d86117f70dec9fba3b2397dd7179ddb6433fb46e..68d4466f533975261c27c4a5773458a0e7bd5502 100644
--- a/content/common/service_manager/child_connection.cc
+++ b/content/common/service_manager/child_connection.cc
@@ -94,13 +94,12 @@ class ChildConnection::IOThreadContext
     service_manager::mojom::PIDReceiverRequest pid_receiver_request(
         &pid_receiver_);
 
-    service_manager::Connector::ConnectParams params(child_identity);
-    params.set_client_process_connection(std::move(service),
-                                         std::move(pid_receiver_request));
-
-    // In some unit testing scenarios a null connector is passed.
-    if (connector)
-      connection_ = connector->Connect(&params);
+    if (connector) {
+      connector->Start(child_identity,
+                       std::move(service),
+                       std::move(pid_receiver_request));
+      connection_ = connector->Connect(child_identity);
+    }
   }
 
   void ShutDownOnIOThread() {