Split captive portal metrics out of SSLErrorClassification

chrome/browser/ssl/captive_portal_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_SSL_CAPTIVE_PORTAL_METRICS_HELPER_H_
+#define CHROME_BROWSER_SSL_CAPTIVE_PORTAL_METRICS_HELPER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/time/time.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "net/cert/x509_certificate.h"
+#include "url/gurl.h"
+
+namespace content {
+class WebContents;
+}
+
+// This class helps the SSL interstitial record captive portal-specific
+// metrics. It should only be used on the UI thread because its implementation
+// uses captive_portal::CaptivePortalService which can only be accessed on the
+// UI thread.
+class CaptivePortalMetricsHelper : public content::NotificationObserver {

[estark, 2015/09/25 23:53:35]

nit: What do you think about naming it CaptivePortalMetricsRecorder or something
like that? (Because "helper" is a little vague.)

[felt, 2015/09/27 20:08:15]

Sure.

+ public:
+  CaptivePortalMetricsHelper(content::WebContents* web_contents,
+                             bool overridable);
+  ~CaptivePortalMetricsHelper() override;
+
+  // Should be called when the interstitial is closing.
+  void RecordCaptivePortalUMAStatistics() const;
+
+ private:
+  typedef std::vector<std::string> Tokens;
+
+  // content::NotificationObserver:
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
+
+  bool overridable_;
+  bool captive_portal_detection_enabled_;
+  // Did the probe complete before the interstitial was closed?
+  bool captive_portal_probe_completed_;
+  // Did the captive portal probe receive an error or get a non-HTTP response?
+  bool captive_portal_no_response_;
+  bool captive_portal_detected_;
+
+  content::NotificationRegistrar registrar_;
+};
+
+#endif  // CHROME_BROWSER_SSL_CAPTIVE_PORTAL_METRICS_HELPER_H_