OAuth2 sign-in flow for ChromeOS

chrome/browser/chromeos/login/existing_user_controller.cc

Index: chrome/browser/chromeos/login/existing_user_controller.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller.cc b/chrome/browser/chromeos/login/existing_user_controller.cc
index 28b2f1f9c3adeeda7f626b94908c4c54f47027d3..3cb673abe2c6b9b7bc638337fb5c1b40e6ef18a3 100644
--- a/chrome/browser/chromeos/login/existing_user_controller.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller.cc
@@ -998,8 +998,11 @@ void ExistingUserController::ShowGaiaPasswordChanged(
     const std::string& username) {
   // Invalidate OAuth token, since it can't be correct after password is
   // changed.
-  UserManager::Get()->SaveUserOAuthStatus(username,
-                                          User::OAUTH_TOKEN_STATUS_INVALID);
+  UserManager::Get()->SaveUserOAuthStatus(
+      username,
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kForceOAuth2) ?
+          User::OAUTH2_TOKEN_STATUS_INVALID :
+          User::OAUTH1_TOKEN_STATUS_INVALID);
 
   login_display_->SetUIEnabled(true);
   login_display_->ShowGaiaPasswordChanged(username);