Convert SigninTracker to use OAuth2TokenService notifications

chrome/browser/signin/profile_oauth2_token_service.cc

Index: chrome/browser/signin/profile_oauth2_token_service.cc
diff --git a/chrome/browser/signin/profile_oauth2_token_service.cc b/chrome/browser/signin/profile_oauth2_token_service.cc
index 1687b33ef6c8e637b13d75deb8c981d0331e215b..3b617c14d110ac3c50e196d02525fbcfbb83fd14 100644
--- a/chrome/browser/signin/profile_oauth2_token_service.cc
+++ b/chrome/browser/signin/profile_oauth2_token_service.cc
@@ -122,6 +122,14 @@ void ProfileOAuth2TokenService::UpdateAuthError(
   if (error.state() != last_auth_error_.state()) {
     last_auth_error_ = error;
     signin_global_error_->AuthStatusChanged();
+
+    if (last_auth_error_.state() ==
+        GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS) {
+      TokenService* token_service =
+          TokenServiceFactory::GetForProfile(profile_);
+      token_service->ClearOAuth2Credentials();
+      DCHECK(!token_service->HasOAuthLoginToken());
+    }

[fgorski, 2013/08/29 22:31:12]

You should call RevokeCredentials for the respective account_id on the PO2TS
(for now it can be GetAccountId(profile_)), as the TokenService related code
will be removed, and you still want to have the clean up performed.

[Roger Tawa OOO till Jul 10th, 2013/08/30 02:25:14]

Yeah totally makes sense.  Done.

   }
 }