Fix build after https://codereview.chromium.org/13865012/

chrome/browser/extensions/shell_window_registry.cc

Index: chrome/browser/extensions/shell_window_registry.cc
diff --git a/chrome/browser/extensions/shell_window_registry.cc b/chrome/browser/extensions/shell_window_registry.cc
index 6d64374ca975d02a084e33fdca6c4e36b9dda234..0f03e1691c977c2f8e495cbd7068e74a6074aab7 100644
--- a/chrome/browser/extensions/shell_window_registry.cc
+++ b/chrome/browser/extensions/shell_window_registry.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
+#include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/extensions/native_app_window.h"
@@ -257,8 +258,9 @@ bool ShellWindowRegistry::Factory::ServiceIsNULLWhileTesting() const {
   return false;
 }
 
-bool ShellWindowRegistry::Factory::ServiceRedirectedInIncognito() const {
-  return true;
+content::BrowserContext* ShellWindowRegistry::Factory::GetBrowserContextToUse(
+    content::BrowserContext* context) const {
+  return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 }  // namespace extensions