Move scoped_temp_dir from base to base/files

chrome/installer/util/work_item_list_unittest.cc

Index: chrome/installer/util/work_item_list_unittest.cc
diff --git a/chrome/installer/util/work_item_list_unittest.cc b/chrome/installer/util/work_item_list_unittest.cc
index 71c75f217b7c04fea15af363928311673081a93d..36f2f9eba40b939aaad44c9314e1b9a943f71800 100644
--- a/chrome/installer/util/work_item_list_unittest.cc
+++ b/chrome/installer/util/work_item_list_unittest.cc
@@ -6,9 +6,9 @@
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/win/registry.h"
 #include "chrome/installer/util/conditional_work_item_list.h"
@@ -45,7 +45,7 @@ class WorkItemListTest : public testing::Test {
     ASSERT_EQ(ERROR_SUCCESS, key.DeleteKey(kTestRoot));
   }
 
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
 };
 
 }  // namespace