AutofillSaveCardInfoBar on mobile should not appear when legal messages don't parse correctly

components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc

Index: components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
diff --git a/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc b/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
index 626743179ee48919b060db283e610d8e95de28b4..d28102a4002d42d5726c43b3625c98043fa7cc5a 100644
--- a/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
+++ b/components/autofill/core/browser/autofill_save_card_infobar_delegate_mobile.cc
@@ -43,8 +43,15 @@ AutofillSaveCardInfoBarDelegateMobile::AutofillSaveCardInfoBarDelegateMobile(
 #endif
       card_label_(base::string16(kMidlineEllipsis) + card.LastFourDigits()),
       card_sub_label_(card.AbbreviatedExpirationDateForDisplay()) {
-  if (legal_message)
-    LegalMessageLine::Parse(*legal_message, &legal_messages_);
+  if (legal_message) {
+    if (!LegalMessageLine::Parse(*legal_message, &legal_messages_)) {
+      AutofillMetrics::LogCreditCardInfoBarMetric(
+          AutofillMetrics::INFOBAR_NOT_SHOWN_INVALID_LEGAL_MESSAGE, upload_,
+          pref_service_->GetInteger(
+              prefs::kAutofillAcceptSaveCreditCardPromptState));
+      return;
+    }
+  }
 
   AutofillMetrics::LogCreditCardInfoBarMetric(
       AutofillMetrics::INFOBAR_SHOWN, upload_,
@@ -63,6 +70,12 @@ void AutofillSaveCardInfoBarDelegateMobile::OnLegalMessageLinkClicked(
   infobar()->owner()->OpenURL(url, WindowOpenDisposition::NEW_FOREGROUND_TAB);
 }
 
+bool AutofillSaveCardInfoBarDelegateMobile::LegalMessagesParsedSuccessfully() {
+  // If we are uploading to the server, verify that legal lines have been parsed
+  // into |legal_messages_|.
+  return !upload_ || !legal_messages_.empty();
+}
+
 int AutofillSaveCardInfoBarDelegateMobile::GetIconId() const {
   return IDR_INFOBAR_AUTOFILL_CC;
 }