Make use of CreateWebUIForRenderManager (doesn't change the actual behavior)

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 2db6514b6d96651fa5b270f296a59b20c7cd7f5d..41e3bf09c1ad181a437aaa126a02e1e50e667511 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2485,7 +2485,7 @@ void WebContentsImpl::DidNavigateMainFramePostCommit(
     // that opened the window, as long as both renderers have the same
     // privileges.
     if (delegate_ && opener_web_ui_type_ == GetWebUITypeForCurrentState()) {
-      WebUIImpl* web_ui = static_cast<WebUIImpl*>(CreateWebUI(GetURL()));
+      WebUIImpl* web_ui = CreateWebUIForRenderManager(GetURL());
       // web_ui might be NULL if the URL refers to a non-existent extension.
       if (web_ui) {
         render_manager_.SetWebUIPostCommit(web_ui);