Highlight fields we know to be invalid but have no way of locally checking.

chrome/browser/ui/autofill/autofill_dialog_types.h

Index: chrome/browser/ui/autofill/autofill_dialog_types.h
diff --git a/chrome/browser/ui/autofill/autofill_dialog_types.h b/chrome/browser/ui/autofill/autofill_dialog_types.h
index 59e5ecbd5f0c443846c0cf30ad7857fa619d4776..0ceb925a24f5c379c823002b038d1926aff9d5f5 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_types.h
+++ b/chrome/browser/ui/autofill/autofill_dialog_types.h
@@ -153,6 +153,12 @@ struct SuggestionState {
   bool editable;
 };
 
+enum ValidationType {
+  VALIDATE_SUGGESTION,  // Validate existing suggestions (e.g. a card expired).
+  VALIDATE_EDIT,        // Validate user edits. Allow for empty fields.
+  VALIDATE_FINAL,       // Full form validation. Required fields can't be empty.
+};
+
 typedef std::vector<DetailInput> DetailInputs;
 typedef std::map<const DetailInput*, string16> DetailOutputMap;