Adding client code for new desktop First Run Experience.

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 2d06fdd44c73052a21b676fcace01613b4a7edde..80aa94ccedb9961d86e092ad4126d5b4601188b4 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -58,6 +58,7 @@
 #include "chrome/browser/ui/webui/usb_internals/usb_internals_ui.h"
 #include "chrome/browser/ui/webui/user_actions/user_actions_ui.h"
 #include "chrome/browser/ui/webui/version_ui.h"
+#include "chrome/browser/ui/webui/welcome_ui.h"
 #include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
@@ -263,6 +264,11 @@ WebUIController* NewWebUI<settings::MdSettingsUI>(WebUI* web_ui,
 }
 #endif
 
+template <>
+WebUIController* NewWebUI<WelcomeUI>(WebUI* web_ui, const GURL& url) {
+  return new WelcomeUI(web_ui, url);
+}
+
 #if defined(ENABLE_EXTENSIONS)
 // Only create ExtensionWebUI for URLs that are allowed extension bindings,
 // hosted by actual tabs.
@@ -383,6 +389,8 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
     return &NewWebUI<UserActionsUI>;
   if (url.host() == chrome::kChromeUIVersionHost)
     return &NewWebUI<VersionUI>;
+  if (url.host() == chrome::kChromeUIWelcomeHost)
+    return &NewWebUI<WelcomeUI>;
 
   /****************************************************************************
    * OS Specific #defines