Bind plugin placeholder directly to v8 instead of over CppBoundClass

chrome/renderer/plugins/chrome_plugin_placeholder.h

Index: chrome/renderer/plugins/chrome_plugin_placeholder.h
diff --git a/chrome/renderer/plugins/chrome_plugin_placeholder.h b/chrome/renderer/plugins/chrome_plugin_placeholder.h
index 0e8b1e38768aba3f0cb0c84d8e796a3ff07eb967..b62b9aabadc9d7b0db3e9e1b14a1015c5e52e70b 100644
--- a/chrome/renderer/plugins/chrome_plugin_placeholder.h
+++ b/chrome/renderer/plugins/chrome_plugin_placeholder.h
@@ -49,8 +49,8 @@ class ChromePluginPlaceholder : public plugins::PluginPlaceholder,
                           const string16& title);
   virtual ~ChromePluginPlaceholder();
 
-  // WebViewPlugin::Delegate (via PluginPlaceholder) method
-  virtual void BindWebFrame(blink::WebFrame* frame) OVERRIDE;
+  // PluginPlaceholder method
+  virtual void Observe(const std::string& callback) OVERRIDE;
 
   // content::RenderViewObserver (via PluginPlaceholder) override:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
@@ -65,11 +65,6 @@ class ChromePluginPlaceholder : public plugins::PluginPlaceholder,
   virtual void OnMenuAction(int request_id, unsigned action) OVERRIDE;
   virtual void OnMenuClosed(int request_id) OVERRIDE;
 
-  // Javascript callback opens chrome://plugins in a new tab.
-  // Arguments are required by the caller, but not used.
-  void OpenAboutPluginsCallback(const webkit_glue::CppArgumentList& args,
-                                webkit_glue::CppVariant* result);
-
   void OnLoadBlockedPlugins(const std::string& identifier);
   void OnSetIsPrerendering(bool is_prerendering);
 #if defined(ENABLE_PLUGIN_INSTALLATION)