Componentizing SafeBrowsingBlockingPage Part 1

components/security_interstitials/core/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 COMPONENTS_SECURITY_INTERSTITIALS_CORE_METRICS_HELPER_H_
 #define COMPONENTS_SECURITY_INTERSTITIALS_CORE_METRICS_HELPER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "base/time/time.h"
-#include "components/rappor/rappor_service_impl.h"
 #include "url/gurl.h"
 
 namespace history {
 class HistoryService;
 }
 
 namespace security_interstitials {
 
 // MetricsHelper records user warning interactions in a common way via METRICS
-// histograms and, optionally, RAPPOR metrics. The class will generate the
-// following histograms:
+// histograms. The class will generate the following histograms:
 //   METRICS: interstitial.<metric_prefix>.decision[.repeat_visit]
-//   METRICS: interstitial.<metric_prefix>.interaction[.repeat_visi]
-//   RAPPOR:  interstitial.<rappor_prefix> (SafeBrowsing parameters)
-//   RAPPOR:  interstitial.<rappor_prefix>2 (Low frequency parameters)
-// wherein |metric_prefix| and |rappor_prefix| are specified via ReportDetails.
+//   METRICS: interstitial.<metric_prefix>.interaction[.repeat_visit]
+// wherein |metric_prefix| is specified via ReportDetails.
 // repeat_visit is also generated if the user has seen the page before.
 //
 // If |extra_suffix| is not empty, MetricsHelper will append ".<extra_suffix>"
 // to generate an additional 2 or 4 more metrics.
 class MetricsHelper {
  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 Decision {
     SHOW,
@@ skipping 16 matching lines @@
     REPORT_PHISHING_ERROR,
     SHOW_WHITEPAPER,
     MAX_INTERACTION
   };
 
   // metric_prefix: Histogram prefix for UMA.
   //                examples: "phishing", "ssl_overridable"
   // extra_suffix: If not-empty, will generate second set of metrics by
   //               placing at the end of the metric name.  Examples:
   //               "from_datasaver", "from_device"
-  // rappor_prefix: Metric prefix for Rappor.
-  //                examples: "phishing2", "ssl3"
-  // rappor_report_type: Specifies the low-frequency RAPPOR configuration to use
-  //                     (i.e. UMA or Safe Browsing).
-  // deprecated_rappor_report_type: Specifies the deprecated RAPPOR
-  //                                configuration to use for comparison with the
-  //                                low-frequency metric.
-  // The rappor preferences can be left blank if rappor_service is not set.
-  // TODO(dominickn): remove deprecated_rappor_report_type once sufficient
-  // comparison data has been collected and analysed - crbug.com/605836.
   struct ReportDetails {
     ReportDetails();
     ReportDetails(const ReportDetails& other);
     ~ReportDetails();
     std::string metric_prefix;
     std::string extra_suffix;
-    std::string rappor_prefix;
-    std::string deprecated_rappor_prefix;
-    rappor::RapporType rappor_report_type;
-    rappor::RapporType deprecated_rappor_report_type;
   };
 
   // Args:
   //   url: URL of page that triggered the interstitial. Only origin is used.
   //   history_service: Set this to record metrics based on whether the user
   //                    has visited this hostname before.
-  //   rappor_service: If you want RAPPOR statistics, provide a service,
-  //                   settings.rappor_prefix, and settings.rappor_report_type.
   //   settings: Specify reporting details (prefixes and report types).
   //   sampling_event_name: Event name for Experience Sampling.
   //                        e.g. "phishing_interstitial_"
   MetricsHelper(const GURL& url,
                 const ReportDetails settings,
-                history::HistoryService* history_service,
-                const base::WeakPtr<rappor::RapporService>& rappor_service);
+                history::HistoryService* history_service);
   virtual ~MetricsHelper();
 
   // Records a user decision or interaction to the appropriate UMA metrics
-  // histogram and potentially in a RAPPOR metric.
+  // histogram.
   void RecordUserDecision(Decision decision);
   void RecordUserInteraction(Interaction interaction);
   void RecordShutdownMetrics();
 
   // Number of times user visited this origin before. -1 means not-yet-set.
   int NumVisits();
 
  protected:
   // Subclasses should implement any embedder-specific recording logic in these
   // methods. They'll be invoked from the matching Record methods.
   virtual void RecordExtraUserDecisionMetrics(Decision decision) = 0;
   virtual void RecordExtraUserInteractionMetrics(Interaction interaction) = 0;
   virtual void RecordExtraShutdownMetrics() = 0;
 
  private:
   // Used to query the HistoryService to see if the URL is in history.  It will
   // only be invoked if the constructor received |history_service|.
   void OnGotHistoryCount(bool success, int num_visits, base::Time first_visit);
 
   void RecordUserDecisionToMetrics(Decision decision,
                                    const std::string& histogram_name);
-  void RecordUserDecisionToRappor(Decision decision,
-                                  const rappor::RapporType rappor_report_type,
-                                  const std::string& rappor_prefix);
   const GURL request_url_;
   const ReportDetails settings_;
-  base::WeakPtr<rappor::RapporService> rappor_service_;
   int num_visits_;
   base::CancelableTaskTracker request_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsHelper);
 };
 
 }  // namespace security_interstitials
 
 #endif  // COMPONENTS_SECURITY_INTERSTITIALS_CORE_METRICS_HELPER_H_