ChromeOS: This CL moves chromeos/login/user_names* to user_mananger.

chrome/browser/chromeos/login/ui/webui_login_display.cc

Index: chrome/browser/chromeos/login/ui/webui_login_display.cc
diff --git a/chrome/browser/chromeos/login/ui/webui_login_display.cc b/chrome/browser/chromeos/login/ui/webui_login_display.cc
index 89bb6044dc0e675c1cdbc0c363e1d6baa3618b04..edcc167d15aac4aa39811b4b96481f879911911d 100644
--- a/chrome/browser/chromeos/login/ui/webui_login_display.cc
+++ b/chrome/browser/chromeos/login/ui/webui_login_display.cc
@@ -17,10 +17,10 @@
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
-#include "chromeos/login/user_names.h"
 #include "components/signin/core/account_id/account_id.h"
 #include "components/strings/grit/components_strings.h"
 #include "components/user_manager/user_manager.h"
+#include "components/user_manager/user_names.h"
 #include "ui/base/ime/chromeos/ime_keyboard.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -227,7 +227,8 @@ void WebUILoginDisplay::LoadWallpaper(const AccountId& account_id) {
 }
 
 void WebUILoginDisplay::LoadSigninWallpaper() {
-  WallpaperManager::Get()->SetDefaultWallpaperDelayed(login::SignInAccountId());
+  WallpaperManager::Get()->SetDefaultWallpaperDelayed(
+      user_manager::SignInAccountId());
 }
 
 void WebUILoginDisplay::OnSigninScreenReady() {