SIGTERM should cause the application to exit on the Mac

chrome/browser/browser_list.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_BROWSER_LIST_H__
 #define CHROME_BROWSER_BROWSER_LIST_H__
 
 #include <vector>
 
 #include "chrome/browser/browser.h"
@@ skipping 60 matching lines @@
   // Find an existing browser with the provided ID. Returns NULL if no such
   // browser currently exists.
   static Browser* FindBrowserWithID(SessionID::id_type desired_id);
 
   // Closes all browsers. If use_post is true the windows are closed by way of
   // posting a WM_CLOSE message, otherwise the windows are closed directly. In
   // almost all cases you'll want to use true, the one exception is ending
   // the session. use_post should only be false when invoked from end session.
   static void CloseAllBrowsers(bool use_post);
 
+  // Closes all browsers and exits.  This is equivalent to
+  // CloseAllBrowsers(true) on platforms where the application exits when no
+  // more windows are remaining.  On other platforms (the Mac), this will
+  // additionally exit the application.
+  static void CloseAllBrowsersAndExit();
+
   // Begins shutdown of the application when the Windows session is ending.
   static void WindowsSessionEnding();
 
   // Returns true if there is at least one Browser with the specified profile.
   static bool HasBrowserWithProfile(Profile* profile);
 
   static const_iterator begin() {
     return browsers_.begin();
   }
 
@@ skipping 94 matching lines @@
   // tab index into the current Browser of the current web view
   int web_view_index_;
 
   // Current TabContents, or NULL if we're at the end of the list. This can
   // be extracted given the browser iterator and index, but it's nice to cache
   // this since the caller may access the current host many times.
   TabContents* cur_;
 };
 
 #endif  // CHROME_BROWSER_BROWSER_LIST_H__