Move scoped_temp_dir from base to base/files

chrome/browser/chromeos/settings/owner_key_util_unittest.cc

Index: chrome/browser/chromeos/settings/owner_key_util_unittest.cc
diff --git a/chrome/browser/chromeos/settings/owner_key_util_unittest.cc b/chrome/browser/chromeos/settings/owner_key_util_unittest.cc
index c0ca8d67d15300ab5ac21194d51cc5d3980dffb0..8f6229907f37462b63d0d34bd701342a85af3209 100644
--- a/chrome/browser/chromeos/settings/owner_key_util_unittest.cc
+++ b/chrome/browser/chromeos/settings/owner_key_util_unittest.cc
@@ -10,8 +10,8 @@
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
-#include "base/scoped_temp_dir.h"
 #include "base/stl_util.h"
 #include "crypto/rsa_private_key.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -58,7 +58,7 @@ class OwnerKeyUtilTest : public testing::Test {
     util_ = new OwnerKeyUtilImpl(key_file_);
   }
 
-  ScopedTempDir tmpdir_;
+  base::ScopedTempDir tmpdir_;
   FilePath key_file_;
   scoped_refptr<OwnerKeyUtil> util_;