Do not display lock for hosted domains

chrome/browser/ui/views/profiles/profile_chooser_view.cc

 // Copyright 2014 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/views/profiles/profile_chooser_view.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
@@ skipping 1257 matching lines @@
   }
 
   if (display_lock) {
     layout->StartRow(1, 0);
     layout->AddView(new views::Separator(views::Separator::HORIZONTAL));
 
     lock_button_ = new BackgroundColorHoverButton(
         this,
         l10n_util::GetStringUTF16(IDS_PROFILES_PROFILE_SIGNOUT_BUTTON),
         *rb->GetImageSkiaNamed(IDR_ICON_PROFILES_MENU_LOCK));
+
+    if (!browser_->profile()->GetPrefs()->GetBoolean(
+        prefs::kProfileIsLockable)) {
+      lock_button_->SetState(views::Button::STATE_DISABLED);
+    }
+
     layout->StartRow(1, 0);
     layout->AddView(lock_button_);
   }
   return view;
 }
 
 views::View* ProfileChooserView::CreateSupervisedUserDisclaimerView() {
   views::View* view = new views::View();
   views::GridLayout* layout = CreateSingleColumnLayout(
       view, kFixedMenuWidth - 2 * views::kButtonHEdgeMarginNew);
@@ skipping 350 matching lines @@
       IncognitoModePrefs::GetAvailability(browser_->profile()->GetPrefs()) !=
           IncognitoModePrefs::DISABLED;
   return incognito_available && !browser_->profile()->IsGuestSession();
 }
 
 void ProfileChooserView::PostActionPerformed(
     ProfileMetrics::ProfileDesktopMenu action_performed) {
   ProfileMetrics::LogProfileDesktopMenu(action_performed, gaia_service_type_);
   gaia_service_type_ = signin::GAIA_SERVICE_TYPE_NONE;
 }