Deal with frame removal by content scripts

extensions/renderer/script_injection_manager.h

Index: extensions/renderer/script_injection_manager.h
diff --git a/extensions/renderer/script_injection_manager.h b/extensions/renderer/script_injection_manager.h
index c0f5da82cce9c5fc6ae14f0f30ce72b02a70cd5b..79d9a13db6330f8744d947aa930ba3a50484d151 100644
--- a/extensions/renderer/script_injection_manager.h
+++ b/extensions/renderer/script_injection_manager.h
@@ -38,6 +38,12 @@ class ScriptInjectionManager : public UserScriptSetManager::Observer {
       UserScriptSetManager* user_script_set_manager);
   virtual ~ScriptInjectionManager();
 
+  // Called by Dispatcher when the document element has been inserted.
+  void AfterDidCreateDocumentElement(content::RenderFrame* render_frame);
+
+  // Called by Dispatcher when the document DOM is ready.
+  void AfterDidFinishDocumentLoad(content::RenderFrame* render_frame);
+
   // Notifies that a new render view has been created.
   void OnRenderFrameCreated(content::RenderFrame* render_frame);