Move scoped_temp_dir from base to base/files

chrome/browser/extensions/user_script_master_unittest.cc

Index: chrome/browser/extensions/user_script_master_unittest.cc
diff --git a/chrome/browser/extensions/user_script_master_unittest.cc b/chrome/browser/extensions/user_script_master_unittest.cc
index 0aabb5ad876831740f16cf19d48dedad6bffcbac..02bfaa4004cc1c6bc621ad9fb0f031cdbd472707 100644
--- a/chrome/browser/extensions/user_script_master_unittest.cc
+++ b/chrome/browser/extensions/user_script_master_unittest.cc
@@ -8,9 +8,9 @@
 
 #include "base/file_path.h"
 #include "base/file_util.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 "chrome/common/chrome_notification_types.h"
 #include "chrome/test/base/testing_profile.h"
@@ -74,7 +74,7 @@ class UserScriptMasterTest : public testing::Test,
   }
 
   // Directory containing user scripts.
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
 
   content::NotificationRegistrar registrar_;