Switch to standard integer types in base/.

base/metrics/user_metrics.cc

 // 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.
 
 #include "base/metrics/user_metrics.h"
 
+#include <stddef.h>
+
 #include <vector>
 
 #include "base/lazy_instance.h"
+#include "base/macros.h"
 #include "base/threading/thread_checker.h"
 
 namespace base {
 namespace {
 
 // A helper class for tracking callbacks and ensuring thread-safety.
 class Callbacks {
  public:
   Callbacks() {}
 
@@ skipping 45 matching lines @@
 void AddActionCallback(const ActionCallback& callback) {
   g_callbacks.Get().AddCallback(callback);
 }
 
 void RemoveActionCallback(const ActionCallback& callback) {
   g_callbacks.Get().RemoveCallback(callback);
 
 }
 
 }  // namespace base