Simplify adding callbacks.

chrome/browser/ui/webui/chromeos/login/enterprise_oauth_enrollment_screen_handler.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/chromeos/login/enterprise_oauth_enrollment_screen_handler.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
+#include "base/values.h"
 #include "chrome/browser/browsing_data/browsing_data_helper.h"
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
 #include "chrome/browser/net/gaia/gaia_oauth_fetcher.h"
 #include "chrome/browser/policy/cloud/message_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "content/public/browser/web_contents.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/gaia_switches.h"
@@ skipping 350 matching lines @@
   callbacks_to_run.swap(auth_reset_callbacks_);
   for (std::vector<base::Closure>::iterator callback(callbacks_to_run.begin());
        callback != callbacks_to_run.end(); ++callback) {
     callback->Run();
   }
 }
 
 // EnterpriseOAuthEnrollmentScreenHandler, private -----------------------------
 
 void EnterpriseOAuthEnrollmentScreenHandler::HandleClose(
-    const base::ListValue* value) {
-  std::string reason;
-  CHECK_EQ(1U, value->GetSize());
-  CHECK(value->GetString(0, &reason));
-
+    const std::string& reason) {
   if (!controller_) {
     NOTREACHED();
     return;
   }
 
   if (reason == "cancel" || reason == "autocancel")
     controller_->OnCancel();
   else if (reason == "done")
     controller_->OnConfirmationClosed();
   else
     NOTREACHED();
 
   RevokeTokens();
 }
 
 void EnterpriseOAuthEnrollmentScreenHandler::HandleCompleteLogin(
-    const base::ListValue* value) {
+    const std::string& user) {
   if (!controller_) {
     NOTREACHED();
     return;
   }
-
-  std::string user;
-  if (!value->GetString(0, &user)) {
-    NOTREACHED() << "Invalid user parameter from UI.";
-    return;
-  }
-
   controller_->OnLoginDone(gaia::SanitizeEmail(user));
 }
 
-void EnterpriseOAuthEnrollmentScreenHandler::HandleRetry(
-    const base::ListValue* value) {
+void EnterpriseOAuthEnrollmentScreenHandler::HandleRetry() {
   if (!controller_) {
     NOTREACHED();
     return;
   }
-
   controller_->OnRetry();
 }
 
 void EnterpriseOAuthEnrollmentScreenHandler::ShowStep(const char* step) {
   base::StringValue step_value(step);
   CallJS("oobe.OAuthEnrollmentScreen.showStep",
          step_value);
 }
 
 void EnterpriseOAuthEnrollmentScreenHandler::ShowError(int message_id,
@@ skipping 56 matching lines @@
   screen_data.SetBoolean("is_auto_enrollment", is_auto_enrollment_);
   if (!test_email_.empty()) {
     screen_data.SetString("test_email", test_email_);
     screen_data.SetString("test_password", test_password_);
   }
 
   ShowScreen(OobeUI::kScreenOobeEnrollment, &screen_data);
 }
 
 }  // namespace chromeos