Step two of optionally sending messages to/from message ports as base::Value.

content/renderer/render_frame_proxy.cc

 // Copyright 2014 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 "content/renderer/render_frame_proxy.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "content/child/webmessageportchannel_impl.h"
@@ skipping 271 matching lines @@
     blink::WebDOMMessageEvent event) {
   DCHECK(!web_frame_ || web_frame_ == target_frame);
 
   ViewMsg_PostMessage_Params params;
   params.is_data_raw_string = false;
   params.data = event.data().toString();
   params.source_origin = event.origin();
   if (!target_origin.isNull())
     params.target_origin = target_origin.toString();
 
-  blink::WebMessagePortChannelArray channels = event.releaseChannels();
-  if (!channels.isEmpty()) {
-    std::vector<int> message_port_ids(channels.size());
-     // Extract the port IDs from the channel array.
-     for (size_t i = 0; i < channels.size(); ++i) {
-       WebMessagePortChannelImpl* webchannel =
-           static_cast<WebMessagePortChannelImpl*>(channels[i]);
-       message_port_ids[i] = webchannel->message_port_id();
-       webchannel->QueueMessages();
-       DCHECK_NE(message_port_ids[i], MSG_ROUTING_NONE);
-     }
-     params.message_port_ids = message_port_ids;
-  }
+  params.message_ports =
+      WebMessagePortChannelImpl::ExtractMessagePortIDs(event.releaseChannels());
 
   // Include the routing ID for the source frame (if one exists), which the
   // browser process will translate into the routing ID for the equivalent
   // frame in the target process.
   params.source_routing_id = MSG_ROUTING_NONE;
   if (source_frame) {
     RenderViewImpl* source_view =
         RenderViewImpl::FromWebView(source_frame->view());
     if (source_view)
       params.source_routing_id = source_view->routing_id();
@@ skipping 22 matching lines @@
       blink::WebUserGestureIndicator::isProcessingUserGesture();
   blink::WebUserGestureIndicator::consumeUserGesture();
   Send(new FrameHostMsg_OpenURL(routing_id_, params));
 }
 
 void RenderFrameProxy::forwardInputEvent(const blink::WebInputEvent* event) {
   Send(new FrameHostMsg_ForwardInputEvent(routing_id_, event));
 }
 
 }  // namespace