Move scoped_temp_dir from base to base/files

chrome/browser/history/url_database_unittest.cc

Index: chrome/browser/history/url_database_unittest.cc
diff --git a/chrome/browser/history/url_database_unittest.cc b/chrome/browser/history/url_database_unittest.cc
index 485c9400c0feea4615e96a8384401252a3baa31c..c16ae0164c4d07c9e498b476a7463b5c991350a2 100644
--- a/chrome/browser/history/url_database_unittest.cc
+++ b/chrome/browser/history/url_database_unittest.cc
@@ -4,8 +4,8 @@
 
 #include "base/file_path.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/history/url_database.h"
@@ -63,7 +63,7 @@ class URLDatabaseTest : public testing::Test,
     db_.Close();
   }
 
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
   sql::Connection db_;
 };