Use a placeholder instead of the default plugin for missing plug-ins on Mac and Linux.

chrome/renderer/blocked_plugin.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 CHROME_RENDERER_BLOCKED_PLUGIN_H_
 #define CHROME_RENDERER_BLOCKED_PLUGIN_H_
 #pragma once
 
 #include "content/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginParams.h"
@@ skipping 11 matching lines @@
 namespace webkit_glue {
 struct CustomContextMenuContext;
 }
 
 class BlockedPlugin : public RenderViewObserver,
                       public CppBoundClass,
                       public webkit::npapi::WebViewPlugin::Delegate {
  public:
   BlockedPlugin(RenderView* render_view,
                 WebKit::WebFrame* frame,
-                const webkit::npapi::PluginGroup& info,
                 const WebKit::WebPluginParams& params,
                 const WebPreferences& settings,
                 int template_id,
+                const string16& name,
                 const string16& message,
                 bool is_blocked_for_prerendering,
                 bool allow_loading);
 
   webkit::npapi::WebViewPlugin* plugin() { return plugin_; }
 
   // WebViewPlugin::Delegate methods:
   virtual void BindWebFrame(WebKit::WebFrame* frame);
   virtual void WillDestroyPlugin();
   virtual void ShowContextMenu(const WebKit::WebMouseEvent&);
@@ skipping 29 matching lines @@
   // The name of the plugin that was blocked.
   string16 name_;
   // True iff the plugin was blocked because the page was being prerendered.
   // Plugin will automatically be loaded when the page is displayed.
   bool is_blocked_for_prerendering_;
   bool hidden_;
   bool allow_loading_;
 };
 
 #endif  // CHROME_RENDERER_BLOCKED_PLUGIN_H_