Add tab reparenting

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/EmptyTabModel.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.base.VisibleForTesting;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.tab.Tab;
 
@@ skipping 118 matching lines @@
     }
 
     @Override
     public void addObserver(TabModelObserver observer) {
     }
 
     @Override
     public void removeObserver(TabModelObserver observer) {
     }
 
+    @Override
+    public void removeTab(Tab tab) {
+    }
+
 }