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 b72ff6dab9d08ecd576d3f481a41037e02543153..87357340538c59d1acaf1488c767b37d0cbd750b 100644
--- a/ash/system/tray/test_system_tray_delegate.cc
+++ b/ash/system/tray/test_system_tray_delegate.cc
@@ -4,6 +4,8 @@
 
 #include "ash/system/tray/test_system_tray_delegate.h"
 
+#include <string>
+
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/volume_control_delegate.h"
@@ -92,6 +94,10 @@ user::LoginStatus TestSystemTrayDelegate::GetUserLoginStatus() const {
   return user::LOGGED_IN_USER;
 }
 
+const std::string TestSystemTrayDelegate::GetEnterpriseDomain() const {
+  return std::string();
+}
+
 bool TestSystemTrayDelegate::SystemShouldUpgrade() const {
   return true;
 }
@@ -134,6 +140,9 @@ void TestSystemTrayDelegate::ShowHelp() {
 void TestSystemTrayDelegate::ShowAccessibilityHelp() {
 }
 
+void TestSystemTrayDelegate::ShowPublicAccountInfo() {
+}
+
 void TestSystemTrayDelegate::ShutDown() {
   MessageLoop::current()->Quit();
 }