Move scoped_temp_dir from base to base/files

chrome/installer/util/delete_tree_work_item.h

Index: chrome/installer/util/delete_tree_work_item.h
diff --git a/chrome/installer/util/delete_tree_work_item.h b/chrome/installer/util/delete_tree_work_item.h
index 2bf7471c9c25aea9e0142fa704dfee8b3177f332..aba34caf518eeaee66c19662f32e0dde3a9b3ca3 100644
--- a/chrome/installer/util/delete_tree_work_item.h
+++ b/chrome/installer/util/delete_tree_work_item.h
@@ -8,8 +8,8 @@
 #include <vector>
 
 #include "base/file_path.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/scoped_temp_dir.h"
 #include "chrome/installer/util/work_item.h"
 
 // A WorkItem subclass that recursively deletes a file system hierarchy at the
@@ -47,11 +47,11 @@ class DeleteTreeWorkItem : public WorkItem {
 
   // Contains the temp directories for the backed-up key files. The directories
   // are created and populated in Do() as-needed. We don't use a standard
-  // container for this since ScopedTempDir isn't CopyConstructible.
-  scoped_array<ScopedTempDir> key_backup_paths_;
+  // container for this since base::ScopedTempDir isn't CopyConstructible.
+  scoped_array<base::ScopedTempDir> key_backup_paths_;
 
   // The temporary directory into which the original root_path_ has been moved.
-  ScopedTempDir backup_path_;
+  base::ScopedTempDir backup_path_;
 
   // Set to true once root_path_ has been copied into backup_path_.
   bool copied_to_backup_;