Shortcut ctrl+shift+T added on android.

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

 // 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.
 
 package org.chromium.chrome.browser.tabmodel;
 
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.tab.Tab;
 
 /**
@@ skipping 130 matching lines @@
     public void commitTabClosure(int tabId);
 
     /**
      * Cancels a pending {@link Tab} closure, bringing the tab back into this model.  Note that this
      * will select the rewound {@link Tab}.
      * @param tabId The id of the {@link Tab} to undo.
      */
     public void cancelTabClosure(int tabId);
 
     /**
+     * Open recent closed tab.
+     */
+    public void openRecentClosedTab();
+
+    /**
      * @return The complete {@link TabList} this {@link TabModel} represents.  Note that this may
      *         be different than this actual {@link TabModel} if it supports pending closures
      *         {@link #supportsPendingClosures()}, as this will include all pending closure tabs.
      */
     public TabList getComprehensiveModel();
 
     /**
      * Selects a tab by its index.
      * @param i    The index of the tab to select.
      * @param type The type of selection.
@@ skipping 36 matching lines @@
      * @param observer The observer to be subscribed.
      */
     void addObserver(TabModelObserver observer);
 
     /**
      * Unsubscribes a previously subscribed {@link TabModelObserver}.
      * @param observer The observer to be unsubscribed.
      */
     void removeObserver(TabModelObserver observer);
 }