Remove Undo Options from DeviceClassManager

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelImpl.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.tabmodel;
 
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.ObserverList;
 import org.chromium.base.TraceEvent;
 import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
-import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.partnercustomizations.HomepageManager;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabCreatorManager.TabCreator;
 import org.chromium.chrome.browser.util.MathUtils;
 import org.chromium.content_public.browser.WebContents;
 
 import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ skipping 205 matching lines @@
         return nextTab;
     }
 
     @Override
     public boolean isClosurePending(int tabId) {
         return mRewoundList.getPendingRewindTab(tabId) != null;
     }
 
     @Override
     public boolean supportsPendingClosures() {
-        return !isIncognito()
-                && DeviceClassManager.enableUndo(ApplicationStatus.getApplicationContext());
+        return !isIncognito();
     }
 
     @Override
     public TabList getComprehensiveModel() {
         if (!supportsPendingClosures()) return this;
         return mRewoundList;
     }
 
     @Override
     public void cancelTabClosure(int tabId) {
@@ skipping 452 matching lines @@
     @Override
     public int index() {
         return mIndex;
     }
 
     @Override
     protected boolean isSessionRestoreInProgress() {
         return mModelDelegate.isSessionRestoreInProgress();
     }
 }