Plugin Placeholders: Refactor for platforms that don't support plugins

components/plugins/renderer/mobile_youtube_plugin.h

Index: components/plugins/renderer/mobile_youtube_plugin.h
diff --git a/components/plugins/renderer/mobile_youtube_plugin.h b/components/plugins/renderer/mobile_youtube_plugin.h
index 99a6213b654975785eb21acd04e0af5867e6b689..46f336258e71301445fbad5657e483c29ed5768d 100644
--- a/components/plugins/renderer/mobile_youtube_plugin.h
+++ b/components/plugins/renderer/mobile_youtube_plugin.h
@@ -19,8 +19,7 @@ class MobileYouTubePlugin : public PluginPlaceholder {
   MobileYouTubePlugin(content::RenderFrame* render_frame,
                       blink::WebLocalFrame* frame,
                       const blink::WebPluginParams& params,
-                      base::StringPiece& template_html,
-                      GURL placeholderDataUrl);
+                      base::StringPiece& template_html);
 
   // Whether this is a youtube url.
   static bool IsYouTubeURL(const GURL& url, const std::string& mime_type);
@@ -31,9 +30,6 @@ class MobileYouTubePlugin : public PluginPlaceholder {
   // Opens a youtube app in the current tab.
   void OpenYoutubeUrlCallback();
 
-  // WebViewPlugin::Delegate (via PluginPlaceholder) method
-  void BindWebFrame(blink::WebFrame* frame) override;
-
   // gin::Wrappable (via PluginPlaceholder) method
   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) override;