Adds a NonClientFrameView for generic toplevel windows.

ui/aura/desktop.h

Index: ui/aura/desktop.h
===================================================================
--- ui/aura/desktop.h	(revision 102277)
+++ ui/aura/desktop.h	(working copy)
@@ -9,8 +9,9 @@
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/task.h"
+#include "ui/aura/aura_export.h"
+#include "ui/aura/cursor.h"
 #include "ui/aura/root_window.h"
-#include "ui/aura/aura_export.h"
 #include "ui/gfx/compositor/compositor.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -38,6 +39,9 @@
   // Sets the size of the desktop.
   void SetSize(const gfx::Size& size);
 
+  // Shows the specified cursor.
+  void SetCursor(CursorType cursor_type);
+
   // Shows the desktop host and runs an event loop for it.
   void Run();