Split captive portal metrics out of SSLErrorClassification

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 "components/security_interstitials/core/metrics_helper.h"
 #include "url/gurl.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 class ExperienceSamplingEvent;
 }
 
+class CaptivePortalMetricsRecorder;
+
 // This class adds desktop-Chrome-specific metrics (extension experience
 // sampling) to the security_interstitials::MetricsHelper. Together, they
 // record UMA, Rappor, and experience sampling metrics.
+
+// This class is meant to be used on the UI thread for captive portal metrics.
 class ChromeMetricsHelper : public security_interstitials::MetricsHelper {
  public:
   ChromeMetricsHelper(
       content::WebContents* web_contents,
       const GURL& url,
       const security_interstitials::MetricsHelper::ReportDetails settings,
       const std::string& sampling_event_name);
   ~ChromeMetricsHelper() override;
 
+  void StartRecordingCaptivePortalMetrics(bool overridable);
+
  protected:
   // security_interstitials::MetricsHelper methods:
   void RecordExtraUserDecisionMetrics(
       security_interstitials::MetricsHelper::Decision decision) override;
   void RecordExtraUserInteractionMetrics(
       security_interstitials::MetricsHelper::Interaction interaction) override;
+  void RecordExtraShutdownMetrics() override;
 
  private:
   content::WebContents* web_contents_;
   const GURL request_url_;
   const std::string sampling_event_name_;
 #if defined(ENABLE_EXTENSIONS)
   scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
 #endif
+  scoped_ptr<CaptivePortalMetricsRecorder> captive_portal_recorder_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsHelper);
 };
 
 #endif  // CHROME_BROWSER_INTERSTITIALS_CHROME_METRICS_HELPER_H_