[WebPayments] Disabling done button when form invalid

chrome/browser/ui/views/payments/contact_info_editor_view_controller.h

Index: chrome/browser/ui/views/payments/contact_info_editor_view_controller.h
diff --git a/chrome/browser/ui/views/payments/contact_info_editor_view_controller.h b/chrome/browser/ui/views/payments/contact_info_editor_view_controller.h
index 661a40278fa7e2de8f603f973fb6b95c2a364fbd..1d10660de0eea0e9b4e64fc1c1e471e75c0d543d 100644
--- a/chrome/browser/ui/views/payments/contact_info_editor_view_controller.h
+++ b/chrome/browser/ui/views/payments/contact_info_editor_view_controller.h
@@ -50,7 +50,6 @@ class ContactInfoEditorViewController : public EditorViewController {
   base::string16 GetSheetTitle() override;
 
  private:
-  bool ValidateModel();
   // Uses the values in the UI fields to populate the corresponding values in
   // |profile|.
   void PopulateProfile(autofill::AutofillProfile* profile);