Customize user details in ash system bubble for public account mode

ash/system/tray/test_system_tray_delegate.cc

Index: ash/system/tray/test_system_tray_delegate.cc
diff --git a/ash/system/tray/test_system_tray_delegate.cc b/ash/system/tray/test_system_tray_delegate.cc
index 7602c4f64f0ca0741c92169e9b221e6dc2deda59..a0124a5d3f28045ec8b899a809eb2428e59f701a 100644
--- a/ash/system/tray/test_system_tray_delegate.cc
+++ b/ash/system/tray/test_system_tray_delegate.cc
@@ -84,6 +84,10 @@ user::LoginStatus TestSystemTrayDelegate::GetUserLoginStatus() const {
       user::LOGGED_IN_USER;
 }
 
+const std::string TestSystemTrayDelegate::GetEnterpriseDomain() const {
+  return "";
+}
+
 bool TestSystemTrayDelegate::SystemShouldUpgrade() const {
   return true;
 }
@@ -123,6 +127,9 @@ void TestSystemTrayDelegate::ShowIMESettings() {
 void TestSystemTrayDelegate::ShowHelp() {
 }
 
+void TestSystemTrayDelegate::ShowPublicAccountInfo() {
+}
+
 void TestSystemTrayDelegate::ShutDown() {
   MessageLoop::current()->Quit();
 }