Emit error events if the loading of an object element failed

chrome/renderer/plugins/non_loadable_plugin_placeholder.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 "chrome/renderer/plugins/non_loadable_plugin_placeholder.h"
 
 #include "base/files/file_path.h"
 #include "base/values.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 15 matching lines @@
   const base::StringPiece template_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_BLOCKED_PLUGIN_HTML));
 
   base::DictionaryValue values;
   values.SetString("message",
                    l10n_util::GetStringUTF8(IDS_PLUGIN_NOT_SUPPORTED));
 
   std::string html_data = webui::GetI18nTemplateHtml(template_html, &values);
 
+  plugins::PluginPlaceholder* plugin =
+      new plugins::PluginPlaceholder(render_frame, frame, params, html_data);
+
+  plugin->plugin()->markAsErrorPlaceholder();
+
   // PluginPlaceholder will destroy itself when its WebViewPlugin is going away.
-  return new plugins::PluginPlaceholder(render_frame, frame, params, html_data);
+  return plugin;
 }
 
 // static
 plugins::PluginPlaceholder* NonLoadablePluginPlaceholder::CreateErrorPlugin(
     content::RenderFrame* render_frame,
     const base::FilePath& file_path) {
   base::DictionaryValue values;
   values.SetString("message",
                    l10n_util::GetStringUTF8(IDS_PLUGIN_INITIALIZATION_ERROR));
 
   const base::StringPiece template_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_BLOCKED_PLUGIN_HTML));
   std::string html_data = webui::GetI18nTemplateHtml(template_html, &values);
 
   blink::WebPluginParams params;
   // PluginPlaceholder will destroy itself when its WebViewPlugin is going away.
   plugins::PluginPlaceholder* plugin =
       new plugins::PluginPlaceholder(render_frame, nullptr, params, html_data);
 
+  plugin->plugin()->markAsErrorPlaceholder();
+
   content::RenderThread::Get()->Send(new ChromeViewHostMsg_CouldNotLoadPlugin(
       plugin->routing_id(), file_path));
   return plugin;
 }