Focus first invalid field of payment request editor

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

Index: chrome/browser/ui/views/payments/validating_textfield.h
diff --git a/chrome/browser/ui/views/payments/validating_textfield.h b/chrome/browser/ui/views/payments/validating_textfield.h
index ee0e1cf673277b814c636fc7390c6547c71b3f8e..12b047247da6a4d4bc4d76259b4074eb37ce5945 100644
--- a/chrome/browser/ui/views/payments/validating_textfield.h
+++ b/chrome/browser/ui/views/payments/validating_textfield.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_BROWSER_UI_VIEWS_PAYMENTS_VALIDATING_TEXTFIELD_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_VALIDATING_TEXTFIELD_H_
 
+#include <memory>
+
 #include "base/macros.h"
 #include "chrome/browser/ui/views/payments/validation_delegate.h"
 #include "ui/views/controls/textfield/textfield.h"
@@ -26,11 +28,11 @@ class ValidatingTextfield : public views::Textfield {
   // Called when the textfield contents is changed. May do validation.
   void OnContentsChanged();
 
- private:
   // Will call to the ValidationDelegate to validate the contents of the
   // textfield.
-  void Validate();
+  void Validate(bool display_error);
 
+ private:
   std::unique_ptr<ValidationDelegate> delegate_;
   bool was_blurred_ = false;
   bool being_removed_ = false;