Change art_file_url to art_fife_url in WMCC

Changed art_file_url to art_fife_url in WalletMaskedCreditCard.

Change-Id: Icf9d3b9a98580ac77b91d04c15c3018644a41aae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1668511
Commit-Queue: Anne Lim <annelim@google.com>
Reviewed-by: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#671377}

components/sync/protocol/autofill_specifics.proto

@@ -94,7 +94,7 @@ message CloudTokenData {
   optional int32 exp_year = 3;
 
   // URL of the card art to be displayed for CPAN.
-  optional string art_file_url = 4;
+  optional string art_fife_url = 4;
 }
 
 message WalletMaskedCreditCard {

components/sync/protocol/proto_visitors.h

@@ -1038,7 +1038,7 @@ VISIT_PROTO_FIELDS(const sync_pb::CloudTokenData& proto) {
   VISIT(suffix);
   VISIT(exp_month);
   VISIT(exp_year);
-  VISIT(art_file_url);
+  VISIT(art_fife_url);
 }
 
 VISIT_PROTO_FIELDS(const sync_pb::WalletMaskedCreditCard& proto) {