kiosk: UMA for launch error

chromeos/login/auth/auth_status_consumer.h

Index: chromeos/login/auth/auth_status_consumer.h
diff --git a/chromeos/login/auth/auth_status_consumer.h b/chromeos/login/auth/auth_status_consumer.h
index ad202a5c8a4bba857b7dc1cc2f72699c0e99ef90..ba2ae4649e7c21c9f73241aacd8a3ba041ae2f3f 100644
--- a/chromeos/login/auth/auth_status_consumer.h
+++ b/chromeos/login/auth/auth_status_consumer.h
@@ -19,24 +19,26 @@ class UserContext;
 
 class CHROMEOS_EXPORT AuthFailure {
  public:
+  // Enum used for UMA. Do NOT reorder or remove entry. Don't forget to
+  // update histograms.xml when adding new entries.
   enum FailureReason {
-    NONE,
-    COULD_NOT_MOUNT_CRYPTOHOME,
-    COULD_NOT_MOUNT_TMPFS,
-    COULD_NOT_UNMOUNT_CRYPTOHOME,
-    DATA_REMOVAL_FAILED,  // Could not destroy your old data
-    LOGIN_TIMED_OUT,
-    UNLOCK_FAILED,
-    NETWORK_AUTH_FAILED,     // Could not authenticate against Google
-    OWNER_REQUIRED,          // Only the device owner can log-in.
-    WHITELIST_CHECK_FAILED,  // Login attempt blocked by whitelist. This
+    NONE = 0,
+    COULD_NOT_MOUNT_CRYPTOHOME = 1,
+    COULD_NOT_MOUNT_TMPFS = 2,
+    COULD_NOT_UNMOUNT_CRYPTOHOME = 3,
+    DATA_REMOVAL_FAILED = 4,  // Could not destroy your old data
+    LOGIN_TIMED_OUT = 5,
+    UNLOCK_FAILED = 6,
+    NETWORK_AUTH_FAILED = 7,     // Could not authenticate against Google
+    OWNER_REQUIRED = 8,          // Only the device owner can log-in.
+    WHITELIST_CHECK_FAILED = 9,  // Login attempt blocked by whitelist. This
     // value is synthesized by the ExistingUserController and passed to the
     // login_status_consumer_ in tests only. It is never generated or seen by
     // any of the other authenticator classes.
-    TPM_ERROR,                   // Critical TPM error encountered.
-    USERNAME_HASH_FAILED,        // Could not get username hash.
-    FAILED_TO_INITIALIZE_TOKEN,  // Could not get OAuth2 Token,
-    NUM_FAILURE_REASONS,         // This has to be the last item.
+    TPM_ERROR = 10,                   // Critical TPM error encountered.
+    USERNAME_HASH_FAILED = 11,        // Could not get username hash.
+    FAILED_TO_INITIALIZE_TOKEN = 12,  // Could not get OAuth2 Token,
+    NUM_FAILURE_REASONS,              // This has to be the last item.
   };
 
   explicit AuthFailure(FailureReason reason)