Revert "Allow declarative webrequest and webrequest in extensions."

extensions/browser/guest_view/web_view/web_view_guest_delegate.h

Index: extensions/browser/guest_view/web_view/web_view_guest_delegate.h
diff --git a/extensions/browser/guest_view/web_view/web_view_guest_delegate.h b/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
index 7a49407b21033b39fb999dc27f3f6e783e8f21ef..2e2722709cc75071c0300b2ba5fc64fcbcd49f82 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
+++ b/extensions/browser/guest_view/web_view/web_view_guest_delegate.h
@@ -40,6 +40,9 @@ class WebViewGuestDelegate {
   // Called to attach helpers just after additional initialization is performed.
   virtual void OnAttachWebViewHelpers(content::WebContents* contents) = 0;
 
+  // Called to perform some cleanup prior to destruction.
+  virtual void OnEmbedderDestroyed() = 0;
+
   // Called after the guest has been attached to an embedder and suspended
   // resource loads have been resumed.
   virtual void OnDidAttachToEmbedder() = 0;