Revert of ChromeOS NetworkScreenHandler should not call CheckAndResolveLocale on UI thread.

chrome/browser/chromeos/policy/device_local_account_browsertest.cc

 // Copyright (c) 2013 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 <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "ash/shell.h"
@@ skipping 1905 matching lines @@
   // Verify that the locale and keyboard layout have been applied.
   EXPECT_EQ(kPublicSessionLocale, g_browser_process->GetApplicationLocale());
   EXPECT_EQ(l10n_util::GetLanguage(kPublicSessionLocale),
             icu::Locale::getDefault().getLanguage());
   EXPECT_EQ(public_session_input_method_id_,
             chromeos::input_method::InputMethodManager::Get()
                 ->GetActiveIMEState()
                 ->GetCurrentInputMethod()
                 .id());
 
-  // Wait for 'tos-accept-button' to become enabled.
-  done = false;
-  ASSERT_TRUE(content::ExecuteScriptAndExtractBool(
-      contents_,
-      "var screenElement = document.getElementById('tos-accept-button');"
-      "function SendReplyIfAcceptEnabled() {"
-      "  if ($('tos-accept-button').disabled)"
-      "    return false;"
-      "  domAutomationController.send(true);"
-      "  observer.disconnect();"
-      "  return true;"
-      "}"
-      "var observer = new MutationObserver(SendReplyIfAcceptEnabled);"
-      "if (!SendReplyIfAcceptEnabled()) {"
-      "  var options = { attributes: true };"
-      "  observer.observe(screenElement, options);"
-      "}",
-      &done));
-
   // Click the accept button.
   ASSERT_TRUE(content::ExecuteScript(contents_,
                                      "$('tos-accept-button').click();"));
 
   WaitForSessionStart();
 
   // Verify that the locale and keyboard layout are still in force.
   EXPECT_EQ(kPublicSessionLocale, g_browser_process->GetApplicationLocale());
   EXPECT_EQ(l10n_util::GetLanguage(kPublicSessionLocale),
             icu::Locale::getDefault().getLanguage());
@@ skipping 129 matching lines @@
   ASSERT_TRUE(content::ExecuteScript(contents_,
                                      "$('tos-accept-button').click();"));
 
   WaitForSessionStart();
 }
 
 INSTANTIATE_TEST_CASE_P(TermsOfServiceDownloadTestInstance,
                         TermsOfServiceDownloadTest, testing::Bool());
 
 }  // namespace policy