Revert of Remove Client= from device/serial/data_stream.mojom.

device/serial/serial_service_unittest.cc

Index: device/serial/serial_service_unittest.cc
diff --git a/device/serial/serial_service_unittest.cc b/device/serial/serial_service_unittest.cc
index 103fb20b6b4fcf127c294f0b44ac9eb4228d090e..7f8beb23b5f59a73ef056d76ad12e041b123600e 100644
--- a/device/serial/serial_service_unittest.cc
+++ b/device/serial/serial_service_unittest.cc
@@ -84,15 +84,12 @@
         &service);
     mojo::InterfacePtr<serial::Connection> connection;
     mojo::InterfacePtr<serial::DataSink> sink;
-    mojo::InterfacePtr<serial::DataSinkClient> sink_client;
-    mojo::GetProxy(&sink_client);
     mojo::InterfacePtr<serial::DataSource> source;
-    mojo::InterfacePtr<serial::DataSourceClient> source_client;
-    mojo::GetProxy(&source_client);
-    service->Connect(path, serial::ConnectionOptions::New(),
-                     mojo::GetProxy(&connection), mojo::GetProxy(&sink),
-                     sink_client.Pass(), mojo::GetProxy(&source),
-                     source_client.Pass());
+    service->Connect(path,
+                     serial::ConnectionOptions::New(),
+                     mojo::GetProxy(&connection),
+                     mojo::GetProxy(&sink),
+                     mojo::GetProxy(&source));
     connection.set_error_handler(this);
     expecting_error_ = !expecting_success;
     connection->GetInfo(