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 81 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::WebFrameClient::DetachType);

[dcheng, 2015/06/01 21:15:54]

You shouldn't need any qualifiers for DetachType here.

[lfg, 2015/06/01 21:34:19]

Done.

   virtual blink::WebCookieJar* cookieJar(blink::WebLocalFrame* frame);
   virtual blink::WebNavigationPolicy decidePolicyForNavigation(
       const NavigationPolicyInfo& info);
 
   virtual void didAddMessageToConsole(const blink::WebConsoleMessage& message,
                                       const blink::WebString& source_name,
                                       unsigned source_line,
                                       const blink::WebString& stack_trace);
   virtual void didFinishLoad(blink::WebLocalFrame* frame);
   virtual void didNavigateWithinPage(blink::WebLocalFrame* frame,
@@ skipping 55 matching lines @@
   Setup* setup_;
 
   scoped_ptr<TouchHandler> touch_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(HTMLDocument);
 };
 
 }  // namespace html_viewer
 
 #endif  // COMPONENTS_HTML_VIEWER_HTML_DOCUMENT_H_