Fix the content_browsertests everywhere maybe.

ui/views/examples/content_client/examples_browser_main_parts.h

Index: ui/views/examples/content_client/examples_browser_main_parts.h
diff --git a/ui/views/examples/content_client/examples_browser_main_parts.h b/ui/views/examples/content_client/examples_browser_main_parts.h
index ec76226bc9b0502387063968da2a189ef0db7f94..932ed72cc6f7d11b1c71b3574279bcadffc9beca 100644
--- a/ui/views/examples/content_client/examples_browser_main_parts.h
+++ b/ui/views/examples/content_client/examples_browser_main_parts.h
@@ -9,12 +9,6 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_main_parts.h"
 
-namespace aura {
-namespace client {
-class StackingClient;
-}
-}
-
 namespace content {
 class ShellBrowserContext;
 struct MainFunctionParams;
@@ -44,9 +38,6 @@ class ExamplesBrowserMainParts : public content::BrowserMainParts {
   scoped_ptr<content::ShellBrowserContext> browser_context_;
 
   scoped_ptr<ViewsDelegate> views_delegate_;
-#if defined(USE_AURA)
-  scoped_ptr<aura::client::StackingClient> stacking_client_;
-#endif
 
   DISALLOW_COPY_AND_ASSIGN(ExamplesBrowserMainParts);
 };