Emit error events if the loading of an object element failed

chrome/renderer/plugins/non_loadable_plugin_placeholder.cc

Index: chrome/renderer/plugins/non_loadable_plugin_placeholder.cc
diff --git a/chrome/renderer/plugins/non_loadable_plugin_placeholder.cc b/chrome/renderer/plugins/non_loadable_plugin_placeholder.cc
index 38e4349651bc64b07cbf98ae202cae5b5e6e6729..13f0575c8a833936464efcd5f67e0aa74fb7b8fa 100644
--- a/chrome/renderer/plugins/non_loadable_plugin_placeholder.cc
+++ b/chrome/renderer/plugins/non_loadable_plugin_placeholder.cc
@@ -33,8 +33,13 @@ NonLoadablePluginPlaceholder::CreateNotSupportedPlugin(
 
   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
@@ -55,6 +60,8 @@ plugins::PluginPlaceholder* NonLoadablePluginPlaceholder::CreateErrorPlugin(
   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;