Reorder browser list on workspace switch

ui/display/desktop_observer.cc

Index: ui/display/desktop_observer.cc
diff --git a/ui/display/desktop_observer.cc b/ui/display/desktop_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..012c50676f0ee6a117bc8e7d674447e85a844fae
--- /dev/null
+++ b/ui/display/desktop_observer.cc
@@ -0,0 +1,13 @@
+// Copyright 2016 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.
+
+#include "ui/display/desktop_observer.h"
+
+namespace display {
+
+base::ObserverList<display::DesktopObserver> g_desktop_observer_list;
+
+DesktopObserver::~DesktopObserver() {}
+
+}  // namespace display