Date and Time dialog for when the clock isn't synced.

chrome/browser/ui/ash/system_tray_delegate_chromeos.cc

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
index 01e8e3784fd0ea90c963719bbd22c737f6b289d6..000bd67ba6eb40ff8943f0754e58a3e117ab6bbe 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
@@ -67,6 +67,7 @@
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
 #include "chrome/browser/chromeos/profiles/multiprofiles_intro_dialog.h"
+#include "chrome/browser/chromeos/set_time_dialog.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/sim_dialog_delegate.h"
 #include "chrome/browser/chromeos/ui/choose_mobile_network_dialog.h"
@@ -481,6 +482,10 @@ void SystemTrayDelegateChromeOS::ShowDateSettings() {
   ShowSettingsSubPageForActiveUser(sub_page);
 }
 
+void SystemTrayDelegateChromeOS::ShowSetTimeDialog() {
+  SetTimeDialog::ShowDialog(GetNativeWindow());
+}
+
 void SystemTrayDelegateChromeOS::ShowNetworkSettings(
     const std::string& service_path) {
   if (!LoginState::Get()->IsUserLoggedIn())