Don't allow elevation for CHROME_OS.

chrome/browser/managed_mode/managed_mode_browsertest.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 "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/infobars/confirm_infobar_delegate.h"
 #include "chrome/browser/infobars/infobar.h"
@@ skipping 570 matching lines @@
 
   ActOnInterstitialAndInfobar(tab, INTERSTITIAL_PROCEED, INFOBAR_ACCEPT);
 
   EXPECT_EQ(ManagedUserService::MANUAL_NONE,
             managed_user_service_->GetManualBehaviorForHost("www.example.com"));
   EXPECT_EQ(ManagedUserService::MANUAL_ALLOW,
             managed_user_service_->GetManualBehaviorForHost(
                 "www.new-example.com"));
 }
 
+#if !defined(OS_CHROMEOS)
 // Now check that the passphrase dialog is shown when a passphrase is specified
 // and the user clicks on the preview button.
 IN_PROC_BROWSER_TEST_F(ManagedModeBlockModeTest,
                        PreviewAuthenticationRequired) {
   // Set a passphrase.
   PrefService* pref_service = browser()->profile()->GetPrefs();
   pref_service->SetString(prefs::kManagedModeLocalPassphrase, "test");
 
   // Navigate to an URL which should be blocked.
   GURL test_url("http://www.example.com/files/simple.html");
   ui_test_utils::NavigateToURL(browser(), test_url);
   WebContents* tab = browser()->tab_strip_model()->GetActiveWebContents();
   InterstitialPage* interstitial_page = tab->GetInterstitialPage();
 
   // Get the ManagedModeInterstitial delegate.
   content::InterstitialPageDelegate* delegate =
       interstitial_page->GetDelegateForTesting();
 
   // Simulate the click on the "preview" button.
   delegate->CommandReceived("\"preview\"");
   WebContentsModalDialogManager* web_contents_modal_dialog_manager =
       WebContentsModalDialogManager::FromWebContents(tab);
   EXPECT_TRUE(web_contents_modal_dialog_manager->IsShowingDialog());
 }
 
+#endif  // OS_CHROMEOS
+
 }  // namespace