[Mac] Restore the Chrome main menu if there are no windows on the active space.

chrome/browser/ui/cocoa/apps/app_shim_menu_controller_mac.mm

 // Copyright 2013 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.
 
 #import "chrome/browser/ui/cocoa/apps/app_shim_menu_controller_mac.h"
 
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 380 matching lines @@
 
     if (extension)
       [self addMenuItems:extension];
     else
       [self removeMenuItems];
   } else if ([name isEqualToString:NSWindowWillCloseNotification]) {
     // If there are any other windows that can become main, leave the menu. It
     // will be changed when another window becomes main. Otherwise, restore the
     // Chrome menu.
     for (NSWindow* w : [NSApp windows]) {
-      if ([w canBecomeMainWindow] && ![w isEqual:window])
+      if ([w canBecomeMainWindow] && ![w isEqual:window] && [w isOnActiveSpace])
         return;
     }
 
     [self removeMenuItems];
   } else {
     NOTREACHED();
   }
 }
 
 - (void)addMenuItems:(const extensions::Extension*)app {
@@ skipping 100 matching lines @@
 
 - (void)focusCurrentPlatformApp {
   extensions::AppWindow* appWindow =
       AppWindowRegistryUtil::GetAppWindowForNativeWindowAnyProfile(
           [NSApp keyWindow]);
   if (appWindow)
     apps::ExtensionAppShimHandler::FocusAppForWindow(appWindow);
 }
 
 @end