Deal with frame removal by content scripts

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 6f839e9f34bd437376fd9aaad99c753e51cd29e8..92fa14cf2eda78bb4f20dcf35ae37c7e84445169 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -490,6 +490,8 @@ class CONTENT_EXPORT RenderFrameImpl
   void didCreateNewDocument(blink::WebLocalFrame* frame) override;
   void didClearWindowObject(blink::WebLocalFrame* frame) override;
   void didCreateDocumentElement(blink::WebLocalFrame* frame) override;
+  void runScriptsAtDocumentElementAvailable(
+      blink::WebLocalFrame* frame) override;
   void didReceiveTitle(blink::WebLocalFrame* frame,
                        const blink::WebString& title,
                        blink::WebTextDirection direction) override;
@@ -497,6 +499,7 @@ class CONTENT_EXPORT RenderFrameImpl
                      blink::WebIconURL::Type icon_type) override;
   void didFinishDocumentLoad(blink::WebLocalFrame* frame,
                              bool document_is_empty) override;
+  void runScriptsAtDocumentReady(blink::WebLocalFrame* frame) override;
   void didHandleOnloadEvents(blink::WebLocalFrame* frame) override;
   void didFailLoad(blink::WebLocalFrame* frame,
                    const blink::WebURLError& error,