Revert of CL 722703002 due to build breakage

chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc

Index: chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc
diff --git a/chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc b/chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc
index 6be11b895d9e117c323bd0ae6afa70ac9287a08e..466638fe9ec02d5af5fd9c1b32b1c1f112da5d85 100644
--- a/chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc
+++ b/chrome/browser/chromeos/login/demo_mode/demo_app_launcher.cc
@@ -14,7 +14,6 @@
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/extensions/app_launch_params.h"
 #include "chrome/browser/ui/extensions/application_launch.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ -23,7 +22,6 @@
 #include "chromeos/network/network_state_handler.h"
 #include "components/user_manager/user_manager.h"
 #include "extensions/browser/extension_system.h"
-#include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "ui/base/window_open_disposition.h"
 
@@ -94,9 +92,8 @@ void DemoAppLauncher::OnProfileLoaded(Profile* profile) {
                                 false,
                                 chromeos::network_handler::ErrorCallback());
 
-  OpenApplication(
-      AppLaunchParams(profile, extension, extensions::LAUNCH_CONTAINER_WINDOW,
-                      NEW_WINDOW, extensions::SOURCE_CHROME_INTERNAL));
+  OpenApplication(AppLaunchParams(
+      profile, extension, extensions::LAUNCH_CONTAINER_WINDOW, NEW_WINDOW));
   InitAppSession(profile, extension_id);
 
   user_manager::UserManager::Get()->SessionStarted();