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

device/serial/serial_service_impl.h

Index: device/serial/serial_service_impl.h
diff --git a/device/serial/serial_service_impl.h b/device/serial/serial_service_impl.h
index 0caf00ee3bbb1a2ae5ec3e3872e1662e4ff5bb35..b6387a84582710e4904dd8f0e7ea5de073b6b0b5 100644
--- a/device/serial/serial_service_impl.h
+++ b/device/serial/serial_service_impl.h
@@ -36,11 +36,13 @@ class SerialServiceImpl : public mojo::InterfaceImpl<serial::SerialService> {
   void GetDevices(
       const mojo::Callback<void(mojo::Array<serial::DeviceInfoPtr>)>& callback)
       override;
-  void Connect(const mojo::String& path,
-               serial::ConnectionOptionsPtr options,
-               mojo::InterfaceRequest<serial::Connection> connection_request,
-               mojo::InterfaceRequest<serial::DataSink> sink,
-               mojo::InterfaceRequest<serial::DataSource> source) override;
+  void Connect(
+      const mojo::String& path,
+      serial::ConnectionOptionsPtr options,
+      mojo::InterfaceRequest<serial::Connection> connection_request,
+      mojo::InterfaceRequest<serial::DataSink> sink,
+      mojo::InterfaceRequest<serial::DataSource> source,
+      mojo::InterfacePtr<serial::DataSourceClient> source_client) override;
 
  private:
   SerialDeviceEnumerator* GetDeviceEnumerator();