Reorder browser list on workspace switch

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
index fa262f135281453397ae8b57f238f3df113a055e..074d777643ec9257ce76bd76114fbb12d488a257 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h
@@ -185,6 +185,10 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
   // Called when |xwindow_|'s _NET_FRAME_EXTENTS property is updated.
   void OnFrameExtentsUpdated();
 
+  // Makes a round trip to the X server to get the enclosing workspace for this
+  // window.  Returns true iff |workspace_| was changed.
+  bool UpdateWorkspace();
+
   // Updates |xwindow_|'s minimum and maximum size.
   void UpdateMinAndMaxSize();
 
@@ -284,6 +288,9 @@ class VIEWS_EXPORT DesktopWindowTreeHostX11
   // |xwindow_|'s maximum size.
   gfx::Size max_size_in_pixels_;
 
+  // The workspace containing |xwindow_|.
+  std::string workspace_;
+
   // The window manager state bits.
   std::set< ::Atom> window_properties_;