change the way windows are parented when their parent is set to NULL.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
===================================================================
--- chrome/browser/chrome_browser_main.cc	(revision 104542)
+++ chrome/browser/chrome_browser_main.cc	(working copy)
@@ -201,9 +201,7 @@
 #endif
 
 #if defined(USE_AURA)
-#include "ui/aura/desktop.h"
-#include "ui/aura_shell/shell_factory.h"
-#include "ui/aura/desktop.h"
+#include "ui/aura_shell/shell.h"
 #endif
 
 namespace net {
@@ -1368,7 +1366,8 @@
   child_process_logging::SetCommandLine(CommandLine::ForCurrentProcess());
 
 #if defined(USE_AURA)
-  aura_shell::InitDesktopWindow();
+  aura_shell::Shell shell;
+  shell.Init();
 #elif defined(TOOLKIT_VIEWS)
   views::Widget::SetPureViews(
       CommandLine::ForCurrentProcess()->HasSwitch(switches::kUsePureViews));