[Blimp Net] Add EngineAuthHandler.

blimp/common/create_blimp_message.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/common/create_blimp_message.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "blimp/common/proto/blimp_message.pb.h"
 #include "blimp/common/proto/compositor.pb.h"
@@ skipping 25 matching lines @@
     RenderWidgetMessage** render_widget_message,
     int target_tab_id) {
   DCHECK(render_widget_message);
   scoped_ptr<BlimpMessage> output(new BlimpMessage);
   output->set_type(BlimpMessage::RENDER_WIDGET);
   output->set_target_tab_id(target_tab_id);
   *render_widget_message = output->mutable_render_widget();
   return output;
 }
 
+scoped_ptr<BlimpMessage> CreateStartConnectionMessage(
+    const std::string& client_token,
+    int protocol_version) {
+  scoped_ptr<BlimpMessage> output(new BlimpMessage);

[Wez, 2015/12/08 22:59:59]

nit: I'd suggest putting using blank lines here to break this function into
three obvious logical blocks: 1. creating the BlimpMessage & setting the type,
2. creating the protocol control message & setting type and 3. creating the
start-connection message within it.

[haibinlu, 2015/12/09 00:02:33]

Done.

+  output->set_type(BlimpMessage::PROTOCOL_CONTROL);
+  ProtocolControlMessage* control_message = output->mutable_protocol_control();
+  control_message->set_type(ProtocolControlMessage::START_CONNECTION);
+  StartConnectionMessage* start_connection_message =
+      control_message->mutable_start_connection();
+  start_connection_message->set_client_token(client_token);
+  start_connection_message->set_protocol_version(protocol_version);
+  return output;
+}
+
 }  // namespace blimp