Move scoped_temp_dir from base to base/files

chrome/browser/extensions/settings/settings_frontend_unittest.cc

Index: chrome/browser/extensions/settings/settings_frontend_unittest.cc
diff --git a/chrome/browser/extensions/settings/settings_frontend_unittest.cc b/chrome/browser/extensions/settings/settings_frontend_unittest.cc
index 0e4ef16595f0a1d82d34446105596f05dff9c8ac..570d2a3bebb1c6cf58c0fe82f3aca115be45b84a 100644
--- a/chrome/browser/extensions/settings/settings_frontend_unittest.cc
+++ b/chrome/browser/extensions/settings/settings_frontend_unittest.cc
@@ -6,9 +6,9 @@
 
 #include "base/bind.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
-#include "base/scoped_temp_dir.h"
 #include "base/stringprintf.h"
 #include "chrome/browser/extensions/settings/leveldb_settings_storage_factory.h"
 #include "chrome/browser/extensions/settings/settings_frontend.h"
@@ -77,7 +77,7 @@ class ExtensionSettingsFrontendTest : public testing::Test {
         SettingsFrontend::Create(storage_factory_.get(), profile_.get()));
   }
 
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
   scoped_ptr<util::MockProfile> profile_;
   scoped_ptr<SettingsFrontend> frontend_;
   scoped_refptr<util::ScopedSettingsStorageFactory> storage_factory_;