[Autofill] Autofill fails to fill credit card number when split across fields.

components/autofill/core/browser/credit_card_field.h

Index: components/autofill/core/browser/credit_card_field.h
diff --git a/components/autofill/core/browser/credit_card_field.h b/components/autofill/core/browser/credit_card_field.h
index bf45e7ee6efb0194481158448104546b07e9ff85..ce2843bc624635650f563f535042392b1f5c1701 100644
--- a/components/autofill/core/browser/credit_card_field.h
+++ b/components/autofill/core/browser/credit_card_field.h
@@ -20,6 +20,7 @@ class AutofillScanner;
 
 class CreditCardField : public FormField {
  public:
+  virtual ~CreditCardField();
   static FormField* Parse(AutofillScanner* scanner);
 
  protected:
@@ -44,7 +45,7 @@ class CreditCardField : public FormField {
 
   // TODO(jhawkins): Parse the select control.
   const AutofillField* type_;  // Optional.
-  const AutofillField* number_;  // Required.
+  std::vector<const AutofillField*> numbers_;  // Required.
 
   // The 3-digit card verification number; we don't currently fill this.
   const AutofillField* verification_;