cros: Add app mode restrictions.

ash/test/test_shell_delegate.cc

Index: ash/test/test_shell_delegate.cc
diff --git a/ash/test/test_shell_delegate.cc b/ash/test/test_shell_delegate.cc
index eb0d8234ebe840e9e48cef3368b5a663be18fa2c..63af2e5aac46e0fab6f5c83d3264501ab6eb0605 100644
--- a/ash/test/test_shell_delegate.cc
+++ b/ash/test/test_shell_delegate.cc
@@ -4,7 +4,7 @@
 
 #include "ash/test/test_shell_delegate.h"
 
-#include <algorithm>
+#include <limits>
 
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/host/root_window_host_factory.h"
@@ -45,6 +45,10 @@ bool TestShellDelegate::IsFirstRunAfterBoot() const {
   return false;
 }
 
+bool TestShellDelegate::IsRunningInForcedAppMode() const {
+  return false;
+}
+
 bool TestShellDelegate::CanLockScreen() const {
   return user_logged_in_ && can_lock_screen_;
 }