Handling of UnresolvedUsingValueDecl nodes.

tools/clang/rewrite_to_chrome_style/tests/template-expected.cc

 // Copyright 2016 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.
 
 namespace not_blink {
 
 void function(int x) {}
 
 class Class {
  public:
@@ skipping 101 matching lines @@
 
 void Test() {
   // f should be rewritten.
   H<int, Class::F>(0);
   // Non-Blink should stay the same.
   H<int, not_blink::Class::staticMethodTemplate>(1);
 }
 
 }  // test_template_arg_is_method_template_in_non_member_context
 
+namespace test_inherited_field {
+
+template <typename T>
+class BaseClass {
+ public:
+  unsigned long size_;
+};
+
+template <typename T>
+class DerivedClass : protected BaseClass<T> {
+ private:
+  using Base = BaseClass<T>;
+  // https://crbug.com/640016: Need to rewrite |m_size| into |size_|.
+  using Base::size_;
+  void Method() { size_ = 123; }
+};
+
+}  // namespace test_inherited_field
+
 namespace test_template_arg_is_method_template_in_member_context {
 
 struct Class {
   template <typename T>
   static void F(T) {}
 };
 
 struct Class2 {
   template <typename T>
   void F(T x) {
@@ skipping 23 matching lines @@
 template <typename T>
 void Class<T>::F(int data_size){};
 
 void Foo() {
   Class<char>().F(123);
 };
 
 }  // namespace test_unnamed_arg
 
 }  // namespace blink