Move scoped_temp_dir from base to base/files

chrome/browser/chromeos/login/login_utils_browsertest.cc

Index: chrome/browser/chromeos/login/login_utils_browsertest.cc
diff --git a/chrome/browser/chromeos/login/login_utils_browsertest.cc b/chrome/browser/chromeos/login/login_utils_browsertest.cc
index f632d7b467d488afdaac12d88b82cad7398e3f93..dcccc6eb0f9f033a65e396fa21165ae93f349cb6 100644
--- a/chrome/browser/chromeos/login/login_utils_browsertest.cc
+++ b/chrome/browser/chromeos/login/login_utils_browsertest.cc
@@ -7,9 +7,9 @@
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ -463,7 +463,7 @@ class LoginUtilsTest : public testing::Test,
   Profile* prepared_profile_;
 
  private:
-  ScopedTempDir scoped_temp_dir_;
+  base::ScopedTempDir scoped_temp_dir_;
 
   std::string device_policy_;
   std::string user_policy_;