Switch to standard integer types in ios/.

ios/chrome/browser/sync/sessions/ios_chrome_local_session_event_router.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/sync/sessions/ios_chrome_local_session_event_router.h"
 
+#include <stddef.h>
+
 #include "base/logging.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/keyed_service/core/service_access_type.h"
 #include "components/sync_sessions/sync_sessions_client.h"
 #include "components/sync_sessions/synced_tab_delegate.h"
 #include "ios/chrome/browser/history/history_service_factory.h"
 #include "ios/chrome/browser/sync/glue/sync_start_util.h"
 #include "ios/chrome/browser/sync/ios_chrome_synced_tab_delegate.h"
 #include "ios/chrome/browser/tab_parenting_global_observer.h"
 #include "ios/public/provider/chrome/browser/browser_state/chrome_browser_state.h"
@@ skipping 94 matching lines @@
 
 void IOSChromeLocalSessionEventRouter::StartRoutingTo(
     browser_sync::LocalSessionEventHandler* handler) {
   DCHECK(!handler_);
   handler_ = handler;
 }
 
 void IOSChromeLocalSessionEventRouter::Stop() {
   handler_ = nullptr;
 }