Make use of CreateInterfacePtrAndBind() where appropriate

mojo/services/network/network_service_delegate.cc

Index: mojo/services/network/network_service_delegate.cc
diff --git a/mojo/services/network/network_service_delegate.cc b/mojo/services/network/network_service_delegate.cc
index 74388f1b78403dccefae494195dc77956bbf17b9..ef606fc7ebf7b08a57d3f237c818c5d320803cda 100644
--- a/mojo/services/network/network_service_delegate.cc
+++ b/mojo/services/network/network_service_delegate.cc
@@ -98,13 +98,10 @@ void NetworkServiceDelegate::Initialize(ApplicationImpl* app) {
   // apptests are also fairly resistant to being run under gdb on android.
   app_->ConnectToService("mojo:filesystem", &files_);
 
-  filesystem::FileSystemClientPtr client;
-  binding_.Bind(GetProxy(&client));
-
   filesystem::FileError error = filesystem::FileError::FAILED;
   filesystem::DirectoryPtr directory;
-  files_->OpenFileSystem("origin", GetProxy(&directory), std::move(client),
-                         Capture(&error));
+  files_->OpenFileSystem("origin", GetProxy(&directory),
+                         binding_.CreateInterfacePtrAndBind(), Capture(&error));
   files_.WaitForIncomingResponse();
 
   io_worker_thread_.reset(new SQLThread(std::move(directory)));