/usr/share/xul-ext/form-history-control/chrome/content/utils/ is in xul-ext-form-history-control 1.4.0.6-1.
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/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcAlignFieldsHistoryWindowControl.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcBrowserListener.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcBundle.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcCleanupFilter.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcDateHandler.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcDbHandler.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcKeyBindings.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcPredefinedRegexp.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcPreferenceHandler.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcRdfExtensionHandler.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcSessionStorage.jsm
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcShowDialog.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcUtil.js
/usr/share/xul-ext/form-history-control/chrome/content/utils/FhcXmlHandler.js