Switch to standard integer types in base/.

base/ios/crb_protocol_observers.mm

 // 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.
 
 #import "base/ios/crb_protocol_observers.h"
 
 #include <objc/runtime.h>
+#include <stddef.h>
 #include <algorithm>
 #include <vector>
 
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/stl_util.h"
 
 @interface CRBProtocolObservers () {
   base::scoped_nsobject<Protocol> _protocol;
   // ivars declared here are private to the implementation but must be
@@ skipping 163 matching lines @@
 
 #pragma mark - Private
 
 - (void)compact {
   DCHECK(!_invocationDepth);
   _observers.erase(std::remove(_observers.begin(), _observers.end(), nil),
                    _observers.end());
 }
 
 @end