Add a modal confirmation dialog to the enterprise profile sign-in flow.

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

Index: chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
diff --git a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
index 8aa5eefadb105bd5536e0c085e11561185702a36..577b9c84bea15bcdc10840194668da8e82e05f5f 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -43,6 +43,7 @@
 #include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
 #include "chrome/browser/ui/webui/profiler_ui.h"
 #include "chrome/browser/ui/webui/quota_internals_ui.h"
+#include "chrome/browser/ui/webui/signin/profile_signin_confirmation_ui.h"
 #include "chrome/browser/ui/webui/signin_internals_ui.h"
 #include "chrome/browser/ui/webui/sync_internals_ui.h"
 #include "chrome/browser/ui/webui/user_actions/user_actions_ui.h"
@@ -341,6 +342,11 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
     return &NewWebUI<PolicyUI>;
 #endif
 
+#if defined(ENABLE_CONFIGURATION_POLICY) && !defined(OS_CHROMEOS)
+  if (url.host() == chrome::kChromeUIProfileSigninConfirmationHost)
+    return &NewWebUI<ProfileSigninConfirmationUI>;
+#endif
+
 #if (defined(OS_LINUX) && defined(TOOLKIT_VIEWS)) || defined(USE_AURA)
   if (url.host() == chrome::kChromeUITabModalConfirmDialogHost) {
     return &NewWebUI<ConstrainedWebDialogUI>;