Switch to standard integer types in components/, part 1 of 4.

components/flags_ui/flags_state.h

 // Copyright 2015 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_FLAGS_UI_FLAGS_STATE_H_
 #define COMPONENTS_FLAGS_UI_FLAGS_STATE_H_
 
+#include <stddef.h>
+
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 
 namespace base {
 class ListValue;
@@ skipping 138 matching lines @@
   // Map from switch name to a set of string, that keeps track which strings
   // were appended to existing (list value) switches.
   std::map<std::string, std::set<std::string>> appended_switches_;
 
   DISALLOW_COPY_AND_ASSIGN(FlagsState);
 };
 
 }  // namespace flags_ui
 
 #endif  // COMPONENTS_FLAGS_UI_FLAGS_STATE_H_