Move card brand fieldnames to CC constants

src/services/autofill.service.ts

@@ -415,7 +415,7 @@ export default class AutofillService implements AutofillServiceInterface {
                     fillFields.code = f;
                     break;
                 } else if (!fillFields.brand && this.isFieldMatch(f[attr],
-                    ['cc-type', 'card-type', 'card-brand', 'cc-brand', 'cb-type'])) {
+                    CreditCardAutoFillConstants.CardBrandFieldNames)) {
                     fillFields.brand = f;
                     break;
                 }

src/services/autofillConstants.ts

@@ -162,6 +162,14 @@ export class CreditCardAutoFillConstants {
     "ccv",
   ];
 
+  static readonly CardBrandFieldNames: string[] = [
+    "cc-type",
+    "card-type",
+    "card-brand",
+    "cc-brand",
+    "cb-type",
+  ];
+
   // Each index represents a language. These three arrays should all be the same length.
   // 0: English, 1: Danish, 2: German/Dutch, 3: French/Spanish/Italian, 4: Russian, 5: Portuguese
   static readonly MonthAbbr = ["mm", "mm", "mm", "mm", "mm", "mm"];