rewrite_to_chrome_style: Improve naming of iterator and type traits.

tools/clang/rewrite_to_chrome_style/tests/wtf-original.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.
 
 // Make sure things in namespace WTF are also renamed.
 namespace WTF {
 
 int makingGlobalsGreatAgain = 0;
 
 void runTheThing(int chicken) {
 }
 
-struct XmlHTTPRequest {
+class XmlHTTPRequest {
   void sendSync();
 
+  static const bool Foo = true;
   int m_readyState;
 };
 
 }  // namespace WTF