Bind plugin placeholder directly to v8 instead of over CppBoundClass

components/plugins/renderer/mobile_youtube_plugin.cc

Index: components/plugins/renderer/mobile_youtube_plugin.cc
diff --git a/components/plugins/renderer/mobile_youtube_plugin.cc b/components/plugins/renderer/mobile_youtube_plugin.cc
index e2f5793e790e4dc55fcd2331828186d90964178a..229be561bd8a22d3d1653d05b04af8f093236710 100644
--- a/components/plugins/renderer/mobile_youtube_plugin.cc
+++ b/components/plugins/renderer/mobile_youtube_plugin.cc
@@ -79,7 +79,14 @@ MobileYouTubePlugin::MobileYouTubePlugin(content::RenderView* render_view,
                         frame,
                         params,
                         HtmlData(params, template_html),
-                        placeholderDataUrl) {}
+                        placeholderDataUrl),
+      weak_factory_(this) {
+  RegisterCallback("openYoutubeURL",
+                   base::Bind(&MobileYouTubePlugin::OpenYoutubeUrlCallback,
+                              weak_factory_.GetWeakPtr()));
+}
+
+MobileYouTubePlugin::~MobileYouTubePlugin() {}
 
 // static
 bool MobileYouTubePlugin::IsYouTubeURL(const GURL& url,
@@ -92,9 +99,7 @@ bool MobileYouTubePlugin::IsYouTubeURL(const GURL& url,
          LowerCaseEqualsASCII(mime_type, content::kFlashPluginSwfMimeType);
 }
 
-void MobileYouTubePlugin::OpenYoutubeUrlCallback(
-    const webkit_glue::CppArgumentList& args,
-    webkit_glue::CppVariant* result) {
+void MobileYouTubePlugin::OpenYoutubeUrlCallback() {
   std::string youtube("vnd.youtube:");
   GURL url(youtube.append(GetYoutubeVideoId(GetPluginParams())));
   WebURLRequest request;
@@ -103,11 +108,5 @@ void MobileYouTubePlugin::OpenYoutubeUrlCallback(
   render_view()->LoadURLExternally(
       GetFrame(), request, blink::WebNavigationPolicyNewForegroundTab);
 }
-void MobileYouTubePlugin::BindWebFrame(WebFrame* frame) {
-  PluginPlaceholder::BindWebFrame(frame);
-  BindCallback("openYoutubeURL",
-               base::Bind(&MobileYouTubePlugin::OpenYoutubeUrlCallback,
-                          base::Unretained(this)));
-}
 
 }  // namespace plugins