[Autofill] Add user actions for checkout flow.

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 f39d393a73fc0a47faab845d64e2d99abb724560..b6390e5083df96b4c39151001f00a8e606cc70f8 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
+#include "base/metrics/user_metrics.h"
 #include "base/time/time.h"
 #include "components/autofill/core/browser/autofill_type.h"
 #include "components/autofill/core/browser/form_structure.h"
@@ -650,6 +651,8 @@ void AutofillMetrics::LogAutofillSuggestionAcceptedIndex(int index) {
   // A maximum of 50 is enforced to minimize the number of buckets generated.
   UMA_HISTOGRAM_SPARSE_SLOWLY("Autofill.SuggestionAcceptedIndex",
                               std::min(index, 50));
+
+  base::RecordAction(base::UserMetricsAction("Autofill_SelectedSuggestion"));
 }
 
 // static
@@ -725,11 +728,20 @@ void AutofillMetrics::FormEventLogger::OnDidInteractWithAutofillableForm() {
   }
 }
 
-void AutofillMetrics::FormEventLogger::OnDidShowSuggestions() {
+void AutofillMetrics::FormEventLogger::OnDidShowSuggestions(
+    bool is_credit_card) {
   Log(AutofillMetrics::FORM_EVENT_SUGGESTIONS_SHOWN);
   if (!has_logged_suggestions_shown_) {

[Mathieu, 2016/04/11 16:45:45]

I'm wondering if the action log should be put in the if block. Since we are
looking to log a sequence of actions, I think we don't want to miss an action in
the sequence...

[sebsg, 2016/04/12 14:40:59]

Done.

     has_logged_suggestions_shown_ = true;
     Log(AutofillMetrics::FORM_EVENT_SUGGESTIONS_SHOWN_ONCE);
+
+    if (is_credit_card) {
+      base::RecordAction(
+          base::UserMetricsAction("Autofill_ShowedCreditCardSuggestions"));
+    } else {
+      base::RecordAction(
+          base::UserMetricsAction("Autofill_ShowedProfileSuggestions"));
+    }
   }
 }
 
@@ -769,6 +781,9 @@ void AutofillMetrics::FormEventLogger::OnDidFillSuggestion(
       Log(AutofillMetrics::FORM_EVENT_LOCAL_SUGGESTION_FILLED_ONCE);
     }
   }
+
+  base::RecordAction(
+      base::UserMetricsAction("Autofill_FilledCreditCardSuggestion"));
 }
 
 void AutofillMetrics::FormEventLogger::OnDidFillSuggestion(
@@ -787,6 +802,9 @@ void AutofillMetrics::FormEventLogger::OnDidFillSuggestion(
         ? AutofillMetrics::FORM_EVENT_SERVER_SUGGESTION_FILLED_ONCE
         : AutofillMetrics::FORM_EVENT_LOCAL_SUGGESTION_FILLED_ONCE);
   }
+
+  base::RecordAction(
+      base::UserMetricsAction("Autofill_FilledProfileSuggestion"));
 }
 
 void AutofillMetrics::FormEventLogger::OnWillSubmitForm() {
@@ -831,6 +849,8 @@ void AutofillMetrics::FormEventLogger::OnFormSubmitted() {
   } else {
     Log(AutofillMetrics::FORM_EVENT_LOCAL_SUGGESTION_SUBMITTED_ONCE);
   }
+
+  base::RecordAction(base::UserMetricsAction("Autofill_FormSubmitted"));
 }
 
 void AutofillMetrics::FormEventLogger::Log(FormEvent event) const {