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

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 2767 matching lines @@
 
   // Find the source frame if it exists.
   WebFrame* source_frame = NULL;
   if (params.source_routing_id != MSG_ROUTING_NONE) {
     RenderViewImpl* source_view = FromRoutingID(params.source_routing_id);
     if (source_view)
       source_frame = source_view->webview()->mainFrame();
   }
 
   // If the message contained MessagePorts, create the corresponding endpoints.
-  DCHECK_EQ(params.message_port_ids.size(), params.new_routing_ids.size());
-  blink::WebMessagePortChannelArray channels(params.message_port_ids.size());
-  for (size_t i = 0;
-       i < params.message_port_ids.size() && i < params.new_routing_ids.size();
-       ++i) {
-    channels[i] =
-        new WebMessagePortChannelImpl(params.new_routing_ids[i],
-                                      params.message_port_ids[i],
-                                      base::MessageLoopProxy::current().get());
-  }
+  blink::WebMessagePortChannelArray channels =
+      WebMessagePortChannelImpl::CreatePorts(
+          params.message_ports, params.new_routing_ids,
+          base::MessageLoopProxy::current().get());
 
   WebSerializedScriptValue serialized_script_value;
   if (params.is_data_raw_string) {
     v8::HandleScope handle_scope(blink::mainThreadIsolate());
     v8::Local<v8::Context> context = frame->mainWorldScriptContext();
     v8::Context::Scope context_scope(context);
     V8ValueConverterImpl converter;
     converter.SetDateAllowed(true);
     converter.SetRegExpAllowed(true);
     scoped_ptr<base::Value> value(new base::StringValue(params.data));
@@ skipping 1229 matching lines @@
     std::vector<gfx::Size> sizes;
     ConvertToFaviconSizes(icon_urls[i].sizes(), &sizes);
     if (!url.isEmpty())
       urls.push_back(
           FaviconURL(url, ToFaviconType(icon_urls[i].iconType()), sizes));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content