Show a replacement plug-in for loading errors.

chrome/renderer/plugins/plugin_placeholder.h

 // 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.
 
 #ifndef CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_
 #define CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_
 #pragma once
 
 #include "content/public/renderer/render_process_observer.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginParams.h"
 #include "webkit/glue/cpp_bound_class.h"
 #include "webkit/plugins/webplugininfo.h"
 #include "webkit/plugins/webview_plugin.h"
 
 struct ChromeViewHostMsg_GetPluginInfo_Status;
 
 namespace webkit {
-struct WebPluginInfo;
 namespace npapi {
 class PluginGroup;
 }
+struct WebPluginInfo;
 }
 
 // Placeholders can be used if a plug-in is missing or not available
 // (blocked or disabled).
 class PluginPlaceholder : public content::RenderViewObserver,
                           public content::RenderProcessObserver,
                           public CppBoundClass,
                           public webkit::WebViewPlugin::Delegate {
  public:
   // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
   static PluginPlaceholder* CreateMissingPlugin(
       content::RenderView* render_view,
       WebKit::WebFrame* frame,
       const WebKit::WebPluginParams& params);
 
+  static PluginPlaceholder* CreateErrorPlugin(
+      content::RenderView* render_view,
+      const FilePath& plugin_path);
+
   static PluginPlaceholder* CreateBlockedPlugin(
       content::RenderView* render_view,
       WebKit::WebFrame* frame,
       const WebKit::WebPluginParams& params,
       const webkit::WebPluginInfo& info,
       const string16& name,
       int resource_id,
       int message_id);
 
   webkit::WebViewPlugin* plugin() { return plugin_; }
@@ skipping 100 matching lines @@
 
   bool hidden_;
   bool has_host_;
   bool finished_loading_;
   string16 plugin_name_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginPlaceholder);
 };
 
 #endif  // CHROME_RENDERER_PLUGINS_PLUGIN_PLACEHOLDER_H_