Fix panel dragging on Linux Aura

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 53406d9f19e2a0de68694e6a473dea44ec78b2e5..773c8b6b35749c4593503e2e331836ed38ca2446 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
@@ -222,9 +222,14 @@ private:
   // Is the window mapped to the screen?
   bool window_mapped_;
 
-  // The bounds of |xwindow_|.
+  // The bounds that were requested for |xwindow_|.

[sadrul, 2014/03/13 15:41:31]

This can be confusing (e.g. |bounds_| can also be the real bounds of
|xwindow_|). It would be better to merge the docs for |bounds_| and |x_bounds_|

   gfx::Rect bounds_;
 
+  // The actual bounds of |xwindow_|. |bounds_| and |x_bounds_| differ
+  // immediately after SetBounds() is called because SetBounds() does not
+  // synchronously change |xwindow_|'s bounds.
+  gfx::Rect x_bounds_;
+
   // Whenever the bounds are set, we keep the previous set of bounds around so
   // we can have a better chance of getting the real |restored_bounds_|. Window
   // managers tend to send a Configure message with the maximized bounds, and