Add a low-frequency RAPPOR configuration, and use it for Safe Browsing and Permissions metrics.

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

 // Copyright (c) 2012 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.
 //
 // Implementation of the SafeBrowsingBlockingPage class.
 
 #include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h"
 
 #include <string>
 
@@ skipping 161 matching lines @@
   else if (harmful)
     interstitial_reason_ = SB_REASON_HARMFUL;
   else
     interstitial_reason_ = SB_REASON_PHISHING;
 
   // This must be done after calculating |interstitial_reason_| above.
   security_interstitials::MetricsHelper::ReportDetails reporting_info;
   reporting_info.metric_prefix = GetMetricPrefix();
   reporting_info.extra_suffix = GetExtraMetricsSuffix();
   reporting_info.rappor_prefix = GetRapporPrefix();
-  reporting_info.rappor_report_type = rappor::SAFEBROWSING_RAPPOR_TYPE;
+  reporting_info.deprecated_rappor_prefix = GetDeprecatedRapporPrefix();
+  reporting_info.rappor_report_type =
+      rappor::LOW_FREQUENCY_SAFEBROWSING_RAPPOR_TYPE;
+  reporting_info.deprecated_rappor_report_type =
+      rappor::SAFEBROWSING_RAPPOR_TYPE;
   set_metrics_helper(base::WrapUnique(new ChromeMetricsHelper(
       web_contents, request_url(), reporting_info, GetSamplingEventName())));
   metrics_helper()->RecordUserDecision(
       security_interstitials::MetricsHelper::SHOW);
   metrics_helper()->RecordUserInteraction(
       security_interstitials::MetricsHelper::TOTAL_VISITS);
   if (IsPrefEnabled(prefs::kSafeBrowsingProceedAnywayDisabled)) {
     metrics_helper()->RecordUserDecision(
         security_interstitials::MetricsHelper::PROCEEDING_DISABLED);
   }
@@ skipping 368 matching lines @@
     case safe_browsing::ThreatSource::UNKNOWN:
       break;
   }
   NOTREACHED();
   return std::string();
 }
 
 std::string SafeBrowsingBlockingPage::GetRapporPrefix() const {
   switch (interstitial_reason_) {
     case SB_REASON_MALWARE:
+      return "malware2";
+    case SB_REASON_HARMFUL:
+      return "harmful2";
+    case SB_REASON_PHISHING:
+      return "phishing2";
+  }
+  NOTREACHED();
+  return std::string();
+}
+
+std::string SafeBrowsingBlockingPage::GetDeprecatedRapporPrefix() const {
+  switch (interstitial_reason_) {
+    case SB_REASON_MALWARE:
       return "malware";
     case SB_REASON_HARMFUL:
       return "harmful";
     case SB_REASON_PHISHING:
       return "phishing";
   }
   NOTREACHED();
   return std::string();
 }
 
@@ skipping 143 matching lines @@
   } else {
     load_time_data->SetString(
         "finalParagraph",
         l10n_util::GetStringUTF16(IDS_PHISHING_V3_PROCEED_PARAGRAPH));
   }
 
   PopulateExtendedReportingOption(load_time_data);
 }
 
 }  // namespace safe_browsing