requestAutocomplete (desktop): don't get stuck in infinite loop

chrome/browser/ui/views/autofill/autofill_dialog_views.h

Index: chrome/browser/ui/views/autofill/autofill_dialog_views.h
diff --git a/chrome/browser/ui/views/autofill/autofill_dialog_views.h b/chrome/browser/ui/views/autofill/autofill_dialog_views.h
index ba7b13258e358d3bbf572dd856e01e217a466f6a..7a0dab0363dac77f4597112f248b66ddae6945ca 100644
--- a/chrome/browser/ui/views/autofill/autofill_dialog_views.h
+++ b/chrome/browser/ui/views/autofill/autofill_dialog_views.h
@@ -92,7 +92,8 @@ class AutofillDialogViews : public AutofillDialogView,
                             FieldValueMap* output) override;
   virtual base::string16 GetCvc() override;
   virtual bool SaveDetailsLocally() override;
-  virtual const content::NavigationController* ShowSignIn() override;
+  virtual const content::NavigationController* ShowSignIn(
+      const GURL& url) override;
   virtual void HideSignIn() override;
   virtual void ModelChanged() override;
   virtual void OnSignInResize(const gfx::Size& pref_size) override;