Recording in UMA when a user interacted with an address form or a credit card form.

components/autofill/core/browser/autofill_metrics.cc

Index: components/autofill/core/browser/autofill_metrics.cc
diff --git a/components/autofill/core/browser/autofill_metrics.cc b/components/autofill/core/browser/autofill_metrics.cc
index 21ca9f840d9ecad5624ba2474946b25d9dea0de2..5189dd5274c46c4e59dcee920c09f2907fa383e8 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -465,4 +465,67 @@ void AutofillMetrics::LogAddressSuggestionsCount(size_t num_suggestions) {
   UMA_HISTOGRAM_COUNTS("Autofill.AddressSuggestionsCount", num_suggestions);
 }
 
+AutofillMetrics::FormEventLogger::FormEventLogger(
+    bool is_credit_card,
+    bool is_server_data_available,
+    bool is_local_data_available)
+    : is_credit_card_(is_credit_card),
+      is_server_data_available_(is_server_data_available),
+      is_local_data_available_(is_local_data_available) {};
+
+void AutofillMetrics::FormEventLogger::Log(AutofillFormEvent event) {
+  DCHECK_LT(event, NUM_AUTOFILL_FORM_EVENTS);
+  std::string custom_name("Autofill.FormEvents.");
+  if (is_credit_card_) {
+    UMA_HISTOGRAM_ENUMERATION("Autofill.FormEvents.CreditCard", event,
+                              NUM_AUTOFILL_FORM_EVENTS);
+  } else {
+    UMA_HISTOGRAM_ENUMERATION("Autofill.FormEvents.Address", event,
+                              NUM_AUTOFILL_FORM_EVENTS);
+  }
+
+  // Logging again in a different histogram for segmentation purposes.
+  if (!is_server_data_available_ && !is_local_data_available_) {
+    if (is_credit_card_) {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.CreditCard.WithNoData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    } else {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.Address.WithNoData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    }
+  } else if (is_server_data_available_ && !is_local_data_available_) {
+    if (is_credit_card_) {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.CreditCard.WithOnlyServerData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    } else {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.Address.WithOnlyServerData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    }
+  } else if (!is_server_data_available_ && is_local_data_available_) {
+    if (is_credit_card_) {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.CreditCard.WithOnlyLocalData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    } else {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.Address.WithOnlyLocalData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    }
+  } else {
+    if (is_credit_card_) {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.CreditCard.WithBothServerAndLocalData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    } else {
+      UMA_HISTOGRAM_ENUMERATION(
+          "Autofill.FormEvents.Address.WithBothServerAndLocalData",
+          event, NUM_AUTOFILL_FORM_EVENTS);
+    }
+  }
+}
+
 }  // namespace autofill