Fix the content_browsertests everywhere maybe.

ui/views/examples/content_client/examples_browser_main_parts.cc

Index: ui/views/examples/content_client/examples_browser_main_parts.cc
diff --git a/ui/views/examples/content_client/examples_browser_main_parts.cc b/ui/views/examples/content_client/examples_browser_main_parts.cc
index e353b575f00f2084afe3e812a482df3531a4b7c9..1714922ae4c1b874ea83c0ce19cd444dbd2f3056 100644
--- a/ui/views/examples/content_client/examples_browser_main_parts.cc
+++ b/ui/views/examples/content_client/examples_browser_main_parts.cc
@@ -22,7 +22,6 @@
 #include "ui/aura/env.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/desktop_aura/desktop_screen.h"
-#include "ui/views/widget/desktop_aura/desktop_stacking_client.h"
 #include "ui/views/widget/native_widget_aura.h"
 #endif
 
@@ -40,8 +39,6 @@ void ExamplesBrowserMainParts::PreMainMessageLoopRun() {
   browser_context_.reset(new content::ShellBrowserContext(false));
 
 #if !defined(OS_CHROMEOS) && defined(USE_AURA)
-  stacking_client_.reset(new DesktopStackingClient);
-  aura::client::SetStackingClient(stacking_client_.get());
   gfx::Screen::SetScreenInstance(
       gfx::SCREEN_TYPE_NATIVE, CreateDesktopScreen());
 #endif
@@ -54,7 +51,6 @@ void ExamplesBrowserMainParts::PostMainMessageLoopRun() {
   browser_context_.reset();
   views_delegate_.reset();
 #if defined(USE_AURA)
-  stacking_client_.reset();
   aura::Env::DeleteInstance();
 #endif
 }