Use the single argument overload of WebFrame::create().

components/plugins/renderer/webview_plugin.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/plugins/renderer/webview_plugin.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_conversions.h"
 #include "content/public/renderer/web_preferences.h"
@@ skipping 27 matching lines @@
 using blink::WebURLError;
 using blink::WebURLRequest;
 using blink::WebURLResponse;
 using blink::WebVector;
 using blink::WebView;
 
 WebViewPlugin::WebViewPlugin(WebViewPlugin::Delegate* delegate)
     : delegate_(delegate),
       container_(NULL),
       web_view_(WebView::create(this)),
-      web_frame_(WebFrame::create(this, 0)),
+      web_frame_(WebFrame::create(this)),
       finished_loading_(false),
       focused_(false) {
   web_view_->setMainFrame(web_frame_);
 }
 
 // static
 WebViewPlugin* WebViewPlugin::Create(WebViewPlugin::Delegate* delegate,
                                      const WebPreferences& preferences,
                                      const std::string& html_data,
                                      const GURL& url) {
@@ skipping 172 matching lines @@
 void WebViewPlugin::didClearWindowObject(WebFrame* frame, int world_id) {
   if (delegate_)
     delegate_->BindWebFrame(frame);
 }
 
 void WebViewPlugin::didReceiveResponse(WebFrame* frame,
                                        unsigned identifier,
                                        const WebURLResponse& response) {
   WebFrameClient::didReceiveResponse(frame, identifier, response);
 }