Switch to standard integer types in ios/.

ios/chrome/browser/browser_state/browser_state_info_cache.cc

 // 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.
 
 #include "ios/chrome/browser/browser_state/browser_state_info_cache.h"
 
+#include <stddef.h>
+
 #include <algorithm>
 
 #include "base/i18n/case_conversion.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/values.h"
 #include "ios/chrome/browser/browser_state/browser_state_info_cache_observer.h"
 #include "ios/chrome/browser/pref_names.h"
@@ skipping 181 matching lines @@
     const base::FilePath& browser_state_path) const {
   DCHECK(user_data_dir_ == browser_state_path.DirName());
   base::FilePath base_name = browser_state_path.BaseName();
   return base_name.MaybeAsASCII();
 }
 
 void BrowserStateInfoCache::AddBrowserStateCacheKey(const std::string& key) {
   sorted_keys_.insert(
       std::upper_bound(sorted_keys_.begin(), sorted_keys_.end(), key), key);
 }