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..d33fb6aa75fe93956dbcbc708370e2f229407072 100644
--- a/chrome/renderer/plugins/chrome_plugin_placeholder.h
+++ b/chrome/renderer/plugins/chrome_plugin_placeholder.h
@@ -49,8 +49,9 @@ 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 InstallAdditionalCallbacks(
+      v8::Handle<v8::Template> prototype) OVERRIDE;
 
   // content::RenderViewObserver (via PluginPlaceholder) override:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
@@ -67,8 +68,8 @@ class ChromePluginPlaceholder : public plugins::PluginPlaceholder,
 
   // 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);
+  static void OpenAboutPluginsCallback(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
 
   void OnLoadBlockedPlugins(const std::string& identifier);
   void OnSetIsPrerendering(bool is_prerendering);