[Autofill] Remove AutofillPopupController::IsWarning()

chrome/browser/ui/autofill/autofill_popup_controller.h

Index: chrome/browser/ui/autofill/autofill_popup_controller.h
diff --git a/chrome/browser/ui/autofill/autofill_popup_controller.h b/chrome/browser/ui/autofill/autofill_popup_controller.h
index 8d7612a4d0ad4148ef41fe17ec39981756ba84d5..5bede9c60c457b724225c0637a4eeb994d33e13b 100644
--- a/chrome/browser/ui/autofill/autofill_popup_controller.h
+++ b/chrome/browser/ui/autofill/autofill_popup_controller.h
@@ -29,10 +29,6 @@ class AutofillPopupController : public AutofillPopupViewDelegate {
   // Accepts the suggestion at |index|.
   virtual void AcceptSuggestion(size_t index) = 0;
 
-  // Returns true if the given index refers to an element that is a warning
-  // rather than an Autofill suggestion.
-  virtual bool IsWarning(size_t index) const = 0;
-
   // Returns the number of lines of data that there are.
   virtual size_t GetLineCount() const = 0;