Show a replacement plug-in for loading errors.

webkit/plugins/npapi/webplugin_page_delegate.h

 // Copyright (c) 2011 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 WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_PAGE_DELEGATE_H_
 #define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_PAGE_DELEGATE_H_
 
 #include <string>
 
 #include "ui/gfx/native_widget_types.h"
 
 class FilePath;
 
 namespace WebKit {
 class WebCookieJar;
+class WebPlugin;
 }
 
 namespace webkit {
 namespace npapi {
 
 class WebPluginDelegate;
 struct WebPluginGeometry;
 
 // Used by the WebPlugin to communicate back to the containing page.
 class WebPluginPageDelegate {
  public:
   // This method is called to create a WebPluginDelegate implementation when a
   // new plugin is instanced.  See CreateWebPluginDelegateHelper
   // for a default WebPluginDelegate implementation.
   virtual WebPluginDelegate* CreatePluginDelegate(
       const FilePath& file_path,
       const std::string& mime_type) = 0;
 
+  // Caled to create a replacement plug-in when loading a plug-in failed.
+  virtual WebKit::WebPlugin* CreatePluginReplacement(
+      const FilePath& file_path) = 0;
+
   // Called when a windowed plugin is created.
   // Lets the view delegate create anything it is using to wrap the plugin.
   virtual void CreatedPluginWindow(
       gfx::PluginWindowHandle handle) = 0;
 
   // Called when a windowed plugin is closing.
   // Lets the view delegate shut down anything it is using to wrap the plugin.
   virtual void WillDestroyPluginWindow(
       gfx::PluginWindowHandle handle) = 0;
 
@@ skipping 10 matching lines @@
   virtual void DidStopLoadingForPlugin() = 0;
 
   // The WebCookieJar to use for this plugin.
   virtual WebKit::WebCookieJar* GetCookieJar() = 0;
 };
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_PAGE_DELEGATE_H_