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

components/query_parser/snippet.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.
 
 // This module computes snippets of queries based on hits in the documents
 // for display in history search results.
 
 #ifndef COMPONENTS_QUERY_PARSER_SNIPPET_H__
 #define COMPONENTS_QUERY_PARSER_SNIPPET_H__
 
+#include <stddef.h>
+
 #include <vector>
 
 #include "base/strings/string16.h"
 
 namespace query_parser {
 
 class Snippet {
  public:
   // Each MatchPosition is the [begin, end) positions of a match within a
   // string.
@@ skipping 43 matching lines @@
   // The text of the snippet.
   base::string16 text_;
 
   // The matches within text_.
   MatchPositions matches_;
 };
 
 }  // namespace query_parser
 
 #endif  // COMPONENTS_QUERY_PARSER_SNIPPET_H__