Autofill: Better recognize credit card fields.

components/autofill/core/browser/autofill_regex_constants.cc.utf8

Index: components/autofill/core/browser/autofill_regex_constants.cc.utf8
diff --git a/components/autofill/core/browser/autofill_regex_constants.cc.utf8 b/components/autofill/core/browser/autofill_regex_constants.cc.utf8
index 5ed5c939707cc019f40d620f0f3308a02ed01f3d..b91a00015e846dc8a8b27e95f24486266431acce 100644
--- a/components/autofill/core/browser/autofill_regex_constants.cc.utf8
+++ b/components/autofill/core/browser/autofill_regex_constants.cc.utf8
@@ -149,8 +149,6 @@ const char kCardCvcRe[] =
     "verification|card identification|security code|card code"
     "|cvn|cvv|cvc|csc|cvd|cid"
     "|\\bcid\\b";
-const char kCardTypeRe[] =
-    "(card|cc|payment).?type|payment.?method|card.*brand";
 
 // "Expiration date" is the most common label here, but some pages have
 // "Expires", "exp. date" or "exp. month" and "exp. year".  We also look
@@ -197,8 +195,6 @@ const char kExpirationDateRe[] =
     "|有効期限"  // ja-JP
     "|validade"  // pt-BR, pt-PT
     "|Срок действия карты";  // ru
-const char kCardIgnoredRe[] =
-    "^card";
 const char kGiftCardRe[] =
     "gift.?card";