Add additional closeAllTabs(boolean uponExit) methods

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.Tab;
 import org.chromium.chrome.browser.profiles.Profile;
 
 /**
@@ skipping 74 matching lines @@
 
     /**
      * Close all tabs on this model. If allowDelegation is true, the model has the option
      * of not closing all tabs and delegating the closure to another class.
      * @param allowDelegation true iff the model may delegate the close all request.
      *                        false iff the model must close all tabs.
      */
     public void closeAllTabs(boolean allowDelegation);
 
     /**
+     * Close all the tabs on this model.
+     * @param uponExit true iff the tabs are being closed upon application exit (after user presses
+     *                 the system back button)
+     */
+    public void closeAllTabs(boolean allowDelegation, boolean uponExit);

[David Trainor- moved to gerrit, 2014/10/29 17:48:54]

Hmm we should get rid of some of these other closeAllTabs() methods.  I'd rather
have one and a utility method that handles passing default values that we can
use for convenience.

Also javadoc!

[Theresa, 2014/10/29 18:00:16]

I'll get rid of the closeAllTabs(boolean allowDelegation) and refactor the
classes that used it. I think we should leave closeAllTabs() for now, and look
into creating a utility method and refactoring in a separate CL since that
change will touch a lot code.

+
+    /**
      * @return Whether or not this model supports pending closures.
      */
     public boolean supportsPendingClosures();
 
     /**
      * Commits all pending closures, closing all tabs that had a chance to be undone.
      */
     public void commitAllTabClosures();
 
     /**
@@ skipping 49 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);
 }