Enable system token in platformKeys api.

chrome/browser/chromeos/platform_keys/platform_keys.cc

Index: chrome/browser/chromeos/platform_keys/platform_keys.cc
diff --git a/chromeos/login/auth/auth_attempt_state_resolver.cc b/chrome/browser/chromeos/platform_keys/platform_keys.cc
similarity index 52%
copy from chromeos/login/auth/auth_attempt_state_resolver.cc
copy to chrome/browser/chromeos/platform_keys/platform_keys.cc
index b8def0d12d149361b9cb291ebdacc73b7789fe53..db5c4bece2231fe241a7a23e4d07225c721e6ae5 100644
--- a/chromeos/login/auth/auth_attempt_state_resolver.cc
+++ b/chrome/browser/chromeos/platform_keys/platform_keys.cc
@@ -2,14 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromeos/login/auth/auth_attempt_state_resolver.h"
+#include "chrome/browser/chromeos/platform_keys/platform_keys.h"
 
 namespace chromeos {
 
-AuthAttemptStateResolver::AuthAttemptStateResolver() {
-}
+namespace platform_keys {
 
-AuthAttemptStateResolver::~AuthAttemptStateResolver() {
-}
+const char kTokenIdUser[] = "user";
+const char kTokenIdSystem[] = "system";
+
+}  // namespace platform_keys
 
 }  // namespace chromeos