[ChromeOS] Make GaiaAutheFetcher parsing logic default to service_unavailable

chrome/common/net/gaia/gaia_auth_fetcher.h

Index: chrome/common/net/gaia/gaia_auth_fetcher.h
diff --git a/chrome/common/net/gaia/gaia_auth_fetcher.h b/chrome/common/net/gaia/gaia_auth_fetcher.h
index fd644a397784fdaaf77a70d2c22f092d0da05219..e0fe76efac51c3f4aedafd284370a6e81abaf3ac 100644
--- a/chrome/common/net/gaia/gaia_auth_fetcher.h
+++ b/chrome/common/net/gaia/gaia_auth_fetcher.h
@@ -105,6 +105,7 @@ class GaiaAuthFetcher : public URLFetcher::Delegate {
   // Constants for parsing ClientLogin errors.
   static const char kAccountDeletedError[];
   static const char kAccountDisabledError[];
+  static const char kBadAuthenticationError[];
   static const char kCaptchaError[];
   static const char kServiceUnavailableError[];
   static const char kErrorParam[];
@@ -192,6 +193,8 @@ class GaiaAuthFetcher : public URLFetcher::Delegate {
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, CaptchaParse);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, AccountDeletedError);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, AccountDisabledError);
+  FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, BadAuthenticationError);
+  FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, IncomprehensibleError);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, ServiceUnavailableError);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, CheckNormalErrorCode);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, CheckTwoFactorResponse);