Clean up threading model of external extension providers

base/values_util.h

Index: base/values_util.h
diff --git a/base/values_util.h b/base/values_util.h
deleted file mode 100644
index 1626bb57e70eb6823316eeaf33c97d2228131eba..0000000000000000000000000000000000000000
--- a/base/values_util.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_VALUES_UTIL_H_
-#define BASE_VALUES_UTIL_H_
-#pragma once
-
-#include "base/values.h"
-#include "base/ref_counted.h"
-
-class RefCountedList : public base::RefCountedThreadSafe<RefCountedList> {
- public:
-  // Takes ownership of |list|.
-  explicit RefCountedList(ListValue* list);
-  virtual ~RefCountedList();
-
-  virtual ListValue* Get();
-
- private:
-  ListValue* list_;
-
-  DISALLOW_COPY_AND_ASSIGN(RefCountedList);
-};
-
-#endif  // BASE_VALUES_UTIL_H_