Logs all reasons card upload was not offered in UKM and UMA.

components/autofill/core/browser/autofill_metrics.cc

 // Copyright 2013 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.
 
 #include "components/autofill/core/browser/autofill_metrics.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 708 matching lines @@
                             NUM_CONVERTED_ADDRESS_CONVERSION_TYPES);
 }
 
 // static
 void AutofillMetrics::LogShowedHttpNotSecureExplanation() {
   base::RecordAction(
       base::UserMetricsAction("Autofill_ShowedHttpNotSecureExplanation"));
 }
 
 // static
-void AutofillMetrics::LogCardUploadDecisionUkm(
+void AutofillMetrics::LogCardUploadDecisionsUkm(
     ukm::UkmService* ukm_service,
     const GURL& url,
-    AutofillMetrics::CardUploadDecisionMetric upload_decision) {
-  if (upload_decision >= AutofillMetrics::NUM_CARD_UPLOAD_DECISION_METRICS)
-    return;
+    const std::vector<AutofillMetrics::CardUploadDecisionMetric>&
+        upload_decisions) {
+  std::vector<std::pair<const char*, int>> metrics;
 
-  const std::vector<std::pair<const char*, int>> metrics = {
-      {internal::kUKMCardUploadDecisionMetricName,
-       static_cast<int>(upload_decision)}};
+  for (const auto it : upload_decisions) {
+    DCHECK_LT(it, AutofillMetrics::NUM_CARD_UPLOAD_DECISION_METRICS);
+    metrics.push_back(
+        {internal::kUKMCardUploadDecisionMetricName, static_cast<int>(it)});

[sebsg, 2017/04/28 15:26:24]

This works, but what do you think about a bitfield? I feel like it would better
represent your data and maybe easier to manipulate? You'd be able to do
something like

upload_decision |= DECISION_NO_ADDRESS;

then later

upload_decision |= DECISION_NO_CVC

etc.

And then you can record as one metric :)

[csashi, 2017/04/28 23:47:45]

Done.

+  }
   LogUkm(ukm_service, url, internal::kUKMCardUploadDecisionEntryName, metrics);
 }
 
 // static
 void AutofillMetrics::LogDeveloperEngagementUkm(
     ukm::UkmService* ukm_service,
     const GURL& url,
     std::vector<AutofillMetrics::DeveloperEngagementMetric> metrics) {
   std::vector<std::pair<const char*, int>> form_structure_metrics;
   for (const auto it : metrics)
@@ skipping 379 matching lines @@
   DCHECK(!form_loaded_timestamp_.is_null());
   return (base::TimeTicks::Now() - form_loaded_timestamp_).InMilliseconds();
 }
 
 void AutofillMetrics::FormInteractionsUkmLogger::GetNewSourceID() {
   source_id_ = ukm_service_->GetNewSourceID();
   ukm_service_->UpdateSourceURL(source_id_, url_);
 }
 
 }  // namespace autofill