Add Rappor metrics for Safe Browsing and SSL interstitials.

chrome/browser/interstitials/security_interstitial_uma_helper.h

-// Copyright (c) 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.
-
-#ifndef CHROME_BROWSER_INTERSTITIALS_SECURITY_INTERSTITIAL_UMA_HELPER_H_
-#define CHROME_BROWSER_INTERSTITIALS_SECURITY_INTERSTITIAL_UMA_HELPER_H_
-
-#include "base/task/cancelable_task_tracker.h"
-#include "base/time/time.h"
-#include "url/gurl.h"
-
-namespace content {
-class WebContents;
-}
-
-namespace extensions {
-class ExperienceSamplingEvent;
-}
-
-// Most of the security interstitials share a common layout and set of
-// choices. SecurityInterstitialUmaHelper is intended to help the security
-// interstitials record user choices in a common way via UMA histograms.
-class SecurityInterstitialUmaHelper {
- public:
-  // These enums are used for histograms.  Don't reorder, delete, or insert
-  // elements. New elements should be added at the end (right before the max).
-  enum SecurityInterstitialDecision {
-    SHOW,
-    PROCEED,
-    DONT_PROCEED,
-    PROCEEDING_DISABLED,
-    MAX_DECISION
-  };
-  enum SecurityInterstitialInteraction {
-    TOTAL_VISITS,
-    SHOW_ADVANCED,
-    SHOW_PRIVACY_POLICY,
-    SHOW_DIAGNOSTIC,
-    SHOW_LEARN_MORE,
-    RELOAD,
-    OPEN_TIME_SETTINGS,
-    MAX_INTERACTION
-  };
-
-  SecurityInterstitialUmaHelper(content::WebContents* web_contents,
-                                const GURL& url,
-                                const std::string& histogram_prefix,
-                                const std::string& sampling_event_name);
-  ~SecurityInterstitialUmaHelper();
-
-  // Record a user decision or interaction to the appropriate UMA histogram.
-  void RecordUserDecision(SecurityInterstitialDecision decision);
-  void RecordUserInteraction(SecurityInterstitialInteraction interaction);
-
- private:
-  // Used to query the HistoryService to see if the URL is in history.
-  void OnGotHistoryCount(bool success, int num_visits, base::Time first_visit);
-
-  content::WebContents* web_contents_;
-  const GURL request_url_;
-  const std::string histogram_prefix_;
-  const std::string sampling_event_name_;
-  int num_visits_;
-  base::CancelableTaskTracker request_tracker_;
-#if defined(ENABLE_EXTENSIONS)
-  scoped_ptr<extensions::ExperienceSamplingEvent> sampling_event_;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(SecurityInterstitialUmaHelper);
-};
-
-#endif  // CHROME_BROWSER_INTERSTITIALS_SECURITY_INTERSTITIAL_UMA_HELPER_H_