Switch to standard integer types in chrome/browser/, part 2 of 4.

chrome/browser/interstitials/chrome_metrics_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_INTERSTITIALS_CHROME_METRICS_HELPER_H_
 #define CHROME_BROWSER_INTERSTITIALS_CHROME_METRICS_HELPER_H_
 
 #include <string>
 
+#include "base/macros.h"
 #include "components/security_interstitials/core/metrics_helper.h"
 #include "url/gurl.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 class ExperienceSamplingEvent;
 }
@@ skipping 32 matching lines @@
   scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
 #endif
 #if defined(ENABLE_CAPTIVE_PORTAL_DETECTION)
   scoped_ptr<CaptivePortalMetricsRecorder> captive_portal_recorder_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsHelper);
 };
 
 #endif  // CHROME_BROWSER_INTERSTITIALS_CHROME_METRICS_HELPER_H_