Switch to standard integer types in components/, part 3 of 4.

components/omnibox/browser/url_prefix.h

 // Copyright 2014 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 COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_
 #define COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_
 
+#include <stddef.h>
+
 #include <vector>
 
 #include "base/strings/string16.h"
 
 struct URLPrefix;
 typedef std::vector<URLPrefix> URLPrefixes;
 
 // A URL prefix; combinations of schemes and (least significant) domain labels
 // that may be inferred from certain URL-like input strings.
 struct URLPrefix {
@@ skipping 36 matching lines @@
 
   base::string16 prefix;
 
   // The number of URL components (scheme, domain label, etc.) in the prefix.
   // For example, "http://foo.com" and "www.bar.com" each have one component,
   // while "ftp://ftp.ftp.com" has two, and "mysite.com" has none.
   size_t num_components;
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_URL_PREFIX_H_