Move scoped_temp_dir from base to base/files

chrome/installer/util/copy_tree_work_item_unittest.cc

Index: chrome/installer/util/copy_tree_work_item_unittest.cc
diff --git a/chrome/installer/util/copy_tree_work_item_unittest.cc b/chrome/installer/util/copy_tree_work_item_unittest.cc
index 3a19a4c6913227857d39fc49aea7bd613e695dbf..d9e0b6c34555ff13696a88b41525bf2845a9c2ce 100644
--- a/chrome/installer/util/copy_tree_work_item_unittest.cc
+++ b/chrome/installer/util/copy_tree_work_item_unittest.cc
@@ -8,11 +8,11 @@
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/threading/platform_thread.h"
 #include "chrome/installer/util/copy_tree_work_item.h"
@@ -32,8 +32,8 @@ namespace {
     }
 
     // the path to temporary directory used to contain the test operations
-    ScopedTempDir test_dir_;
-    ScopedTempDir temp_dir_;
+    base::ScopedTempDir test_dir_;
+    base::ScopedTempDir temp_dir_;
   };
 
   // Simple function to dump some text into a new file.