Deal with frame removal by content scripts

extensions/shell/renderer/shell_content_renderer_client.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 EXTENSIONS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 #define EXTENSIONS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 29 matching lines @@
                        ui::PageTransition transition_type,
                        const GURL& url,
                        const GURL& first_party_for_cookies,
                        GURL* new_url) override;
   bool IsExternalPepperPlugin(const std::string& module_name) override;
   bool ShouldGatherSiteIsolationStats() const override;
   content::BrowserPluginDelegate* CreateBrowserPluginDelegate(
       content::RenderFrame* render_frame,
       const std::string& mime_type,
       const GURL& original_url) override;
+  void AfterDidCreateDocumentElement(
+      content::RenderFrame* render_frame) override;
+  void AfterDidFinishDocumentLoad(content::RenderFrame* render_frame) override;
 
  protected:
   // app_shell embedders may need custom extensions client interfaces.
   // This class takes ownership of the returned object.
   virtual ExtensionsClient* CreateExtensionsClient();
 
  private:
   scoped_ptr<ExtensionsClient> extensions_client_;
   scoped_ptr<ShellExtensionsRendererClient> extensions_renderer_client_;
   scoped_ptr<DispatcherDelegate> extension_dispatcher_delegate_;
   scoped_ptr<Dispatcher> extension_dispatcher_;
   scoped_ptr<ExtensionsGuestViewContainerDispatcher>
       guest_view_container_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellContentRendererClient);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_