ChromeOS: implement per-user time zone preferences.

chrome/browser/flag_descriptions.cc

Index: chrome/browser/flag_descriptions.cc
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index af8b38ede4704bcf3ab0f057ce3e4340a090d51a..14b2e496dd6266439cad87f2f6178ee556180b36 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2300,6 +2300,11 @@ const char kDisableNativeCupsName[] = "Native CUPS";
 const char kDisableNativeCupsDescription[] =
     "Disable the use of the native CUPS printing backend.";
 
+const char kEnablePerUserTimezoneName[] = "Per-user time zone preferences.";
+const char kEnablePerUserTimezoneDescription[] =
+    "Chrome OS system timezone preference is stored and handled for each user "
+    "individually.";
+
 const char kEnableAndroidWallpapersAppName[] = "Android Wallpapers App";
 
 const char kEnableAndroidWallpapersAppDescription[] =