Move scoped_temp_dir from base to base/files

chrome/common/json_value_serializer_unittest.cc

Index: chrome/common/json_value_serializer_unittest.cc
diff --git a/chrome/common/json_value_serializer_unittest.cc b/chrome/common/json_value_serializer_unittest.cc
index 11982ec32d8baa1f09135e1b54bde6c912a9681a..69685f2867466d7ad58162db93af5be4d456489d 100644
--- a/chrome/common/json_value_serializer_unittest.cc
+++ b/chrome/common/json_value_serializer_unittest.cc
@@ -4,12 +4,12 @@
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/json/json_writer.h"
 #include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ -244,7 +244,7 @@ protected:
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   }
 
-  ScopedTempDir temp_dir_;
+  base::ScopedTempDir temp_dir_;
 };
 
 TEST_F(JSONFileValueSerializerTest, Roundtrip) {