Clean up plug-in placeholders:

chrome/renderer/chrome_content_renderer_client.h

Index: chrome/renderer/chrome_content_renderer_client.h
diff --git a/chrome/renderer/chrome_content_renderer_client.h b/chrome/renderer/chrome_content_renderer_client.h
index 55a904ca9488ca3893a17abba4c7dea5563b996b..08662589f9f5ec02fbe3a4541d75a877d41370e0 100644
--- a/chrome/renderer/chrome_content_renderer_client.h
+++ b/chrome/renderer/chrome_content_renderer_client.h
@@ -117,17 +117,6 @@ class ChromeContentRendererClient : public content::ContentRendererClient {
       WebKit::WebFrame* frame,
       const WebKit::WebPluginParams& params);
 
-  WebKit::WebPlugin* CreatePluginPlaceholder(
-      content::RenderView* render_view,
-      WebKit::WebFrame* frame,
-      const webkit::WebPluginInfo& plugin,
-      const WebKit::WebPluginParams& params,
-      const webkit::npapi::PluginGroup* group,
-      int resource_id,
-      int message_id,
-      bool is_blocked_for_prerendering,
-      bool allow_loading);
-
   // Returns the extension for the given URL.  Excludes extension objects for
   // bookmark apps, which do not use the app process model.
   const Extension* GetNonBookmarkAppExtension(const ExtensionSet* extensions,