Queue postMessage messages destined for a MimeHandlerView guest

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.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 "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
 
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/url_constants.h"
@@ skipping 201 matching lines @@
 }
 
 void MimeHandlerViewGuest::OnRequest(
     const ExtensionHostMsg_Request_Params& params) {
   if (extension_function_dispatcher_) {
     extension_function_dispatcher_->Dispatch(
         params, web_contents()->GetRenderViewHost());
   }
 }
 
+void MimeHandlerViewGuest::DocumentOnLoadCompleted(int guest_proxy_routing_id) {
+  embedder_web_contents()->Send(
+      new ExtensionMsg_MimeHandlerViewGuestOnLoadCompleted(
+          element_instance_id()));
+}
+
 }  // namespace extensions