Plugins: Remove Shadow DOM Plugin Placeholder

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index b1b0527a106a476a5b00e1bd789f71f7c4dbae0d..09765e19dad4d98ed5a488a40f87faffbfd7022f 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -39,7 +39,6 @@ class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
 class WebPlugin;
 class WebPluginContainer;
-class WebPluginPlaceholder;
 class WebPrescientNetworking;
 class WebRTCPeerConnectionHandler;
 class WebRTCPeerConnectionHandlerClient;
@@ -92,14 +91,6 @@ class CONTENT_EXPORT ContentRendererClient {
   // none.
   virtual SkBitmap* GetSadWebViewBitmap();
 
-  // Allows the embedder to create a plugin placeholder instead of a plugin.
-  // Called before OverrideCreatePlugin. May return null to decline to provide
-  // a plugin placeholder.
-  virtual scoped_ptr<blink::WebPluginPlaceholder> CreatePluginPlaceholder(
-      RenderFrame* render_frame,
-      blink::WebLocalFrame* frame,
-      const blink::WebPluginParams& params);
-
   // Allows the embedder to override creating a plugin. If it returns true, then
   // |plugin| will contain the created plugin, although it could be NULL. If it
   // returns false, the content layer will create the plugin.