Detach old frame on WebFrame::swap.

components/html_viewer/html_document.h

 // Copyright 2014 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.
 
 #ifndef COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_H_
 #define COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_H_
 
 #include <set>
 
 #include "base/callback.h"
@@ skipping 80 matching lines @@
       blink::WebLocalFrame* frame,
       const blink::WebURL& url,
       blink::WebMediaPlayerClient* client,
       blink::WebContentDecryptionModule* initial_cdm);
   virtual blink::WebFrame* createChildFrame(
       blink::WebLocalFrame* parent,
       blink::WebTreeScopeType scope,
       const blink::WebString& frameName,
       blink::WebSandboxFlags sandboxFlags);
   virtual void frameDetached(blink::WebFrame*);
+  virtual void frameDetached(blink::WebFrame*, blink::WebDetachReason);
   virtual blink::WebCookieJar* cookieJar(blink::WebLocalFrame* frame);
   virtual blink::WebNavigationPolicy decidePolicyForNavigation(
       blink::WebLocalFrame* frame,
       blink::WebDataSource::ExtraData* data,
       const blink::WebURLRequest& request,
       blink::WebNavigationType nav_type,
       blink::WebNavigationPolicy default_policy,
       bool isRedirect);
   virtual void didAddMessageToConsole(const blink::WebConsoleMessage& message,
                                       const blink::WebString& source_name,
@@ skipping 58 matching lines @@
   Setup* setup_;
 
   scoped_ptr<TouchHandler> touch_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(HTMLDocument);
 };
 
 }  // namespace html_viewer
 
 #endif  // COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_H_