Add chrome.screenlockPrivate API functions to handle alternate auth types.

chrome/browser/extensions/extension_function_histogram_value.h

Index: chrome/browser/extensions/extension_function_histogram_value.h
diff --git a/chrome/browser/extensions/extension_function_histogram_value.h b/chrome/browser/extensions/extension_function_histogram_value.h
index 72614ac4d4e7339ba998cae7d4632f61c0877fe5..e1c07587dba7243cda9a5a8df90cb283fc8f74d0 100644
--- a/chrome/browser/extensions/extension_function_histogram_value.h
+++ b/chrome/browser/extensions/extension_function_histogram_value.h
@@ -748,6 +748,10 @@ enum HistogramValue {
   ACTIVITYLOGPRIVATE_DELETEACTIVITIES,
   NETWORKINGPRIVATE_SETWIFITDLSENABLEDSTATE,
   NETWORKINGPRIVATE_GETWIFITDLSSTATUS,
+  SCREENLOCKPRIVATE_HIDEBUTTON,
+  SCREENLOCKPRIVATE_SETAUTHTYPE,
+  SCREENLOCKPRIVATE_GETAUTHTYPE,
+  SCREENLOCKPRIVATE_ACCEPTAUTHATTEMPT,
   ENUM_BOUNDARY  // Last entry: Add new entries above.
 };