Switch to standard integer types in ios/.

ios/web/web_view_counter_impl.mm

 // 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.
 
 #import "ios/web/web_view_counter_impl.h"
 
+#include <stddef.h>
+
 #include "base/logging.h"
 #include "ios/web/public/browser_state.h"
 #include "ios/web/public/web_thread.h"
 
 namespace web {
 
 namespace {
 // A key used to associate a WebViewCounter with a BrowserState.
 const char kWebViewCounterKeyName[] = "web_view_counter";
 }  // namespace
@@ skipping 36 matching lines @@
 
 void WebViewCounterImpl::InsertWKWebView(WKWebView* wk_web_view) {
   DCHECK_CURRENTLY_ON_WEB_THREAD(WebThread::UI);
   DCHECK(wk_web_view);
   DCHECK([wk_web_view isKindOfClass:[WKWebView class]]);
 
   wk_web_view_counter_.Insert(wk_web_view);
 }
 
 }  // namespace web