[Feedback] Update strings per UX recommendations.

chrome/browser/extensions/api/feedback_private/feedback_private_api.cc

Index: chrome/browser/extensions/api/feedback_private/feedback_private_api.cc
diff --git a/chrome/browser/extensions/api/feedback_private/feedback_private_api.cc b/chrome/browser/extensions/api/feedback_private/feedback_private_api.cc
index 0a67240a32a8b557a4db64fa3f00dcbd56ce676c..6b6630008ca960173c048ad64dbe583077f856dc 100644
--- a/chrome/browser/extensions/api/feedback_private/feedback_private_api.cc
+++ b/chrome/browser/extensions/api/feedback_private/feedback_private_api.cc
@@ -154,6 +154,7 @@ bool FeedbackPrivateGetStringsFunction::RunSync() {
 #define SET_STRING(id, idr) \
   dict->SetString(id, l10n_util::GetStringUTF16(idr))
   SET_STRING("page-title", IDS_FEEDBACK_REPORT_PAGE_TITLE);
+  SET_STRING("additionalInfo", IDS_FEEDBACK_ADDITIONAL_INFO_LABEL);
   SET_STRING("page-url", IDS_FEEDBACK_REPORT_URL_LABEL);
   SET_STRING("screenshot", IDS_FEEDBACK_SCREENSHOT_LABEL);
   SET_STRING("user-email", IDS_FEEDBACK_USER_EMAIL_LABEL);