Move scoped_temp_dir from base to base/files

chrome/browser/extensions/settings/settings_sync_unittest.cc

Index: chrome/browser/extensions/settings/settings_sync_unittest.cc
diff --git a/chrome/browser/extensions/settings/settings_sync_unittest.cc b/chrome/browser/extensions/settings/settings_sync_unittest.cc
index 1fb541583e4653be952b916505dca24311d38297..9722558c3efa7063b560781b6d5055e7f54a1845 100644
--- a/chrome/browser/extensions/settings/settings_sync_unittest.cc
+++ b/chrome/browser/extensions/settings/settings_sync_unittest.cc
@@ -5,11 +5,11 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "base/bind.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
-#include "base/scoped_temp_dir.h"
 #include "chrome/browser/extensions/settings/leveldb_settings_storage_factory.h"
 #include "chrome/browser/extensions/settings/settings_frontend.h"
 #include "chrome/browser/extensions/settings/settings_storage_factory.h"
@@ -255,7 +255,7 @@ class ExtensionSettingsSyncTest : public testing::Test {
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
 
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
   scoped_ptr<util::MockProfile> profile_;
   scoped_ptr<SettingsFrontend> frontend_;
   scoped_refptr<util::ScopedSettingsStorageFactory> storage_factory_;