Add additional closeAllTabs(boolean uponExit) methods

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.Tab;
 import org.chromium.chrome.browser.profiles.Profile;
 
@@ skipping 40 matching lines @@
     @Override
     public Tab getNextTabIfClosed(int id) {
         return null;
     }
 
     @Override
     public void closeAllTabs() {
     }
 
     @Override
-    public void closeAllTabs(boolean allowDelegation) {
+    public void closeAllTabs(boolean allowDelegation, boolean uponExit) {
     }
 
     @Override
     public int getCount() {
         // We must return 0 to be consistent with getTab(i)
         return 0;
     }
 
     @Override
     public Tab getTabAt(int position) {
@@ skipping 58 matching lines @@
 
     @Override
     public void addObserver(TabModelObserver observer) {
     }
 
     @Override
     public void removeObserver(TabModelObserver observer) {
     }
 
 }