Add metrics to track Autofill "user happiness"

chrome/browser/autofill/autofill_metrics.cc

Index: chrome/browser/autofill/autofill_metrics.cc
diff --git a/chrome/browser/autofill/autofill_metrics.cc b/chrome/browser/autofill/autofill_metrics.cc
index 3670f05ba214c4d870ffdcc79145f1357226a46e..4b1d846461a6f32347cc87557ca4bd570c14ce60 100644
--- a/chrome/browser/autofill/autofill_metrics.cc
+++ b/chrome/browser/autofill/autofill_metrics.cc
@@ -288,6 +288,50 @@ void AutofillMetrics::LogServerQueryMetric(ServerQueryMetric metric) const {
                             NUM_SERVER_QUERY_METRICS);
 }
 
+void AutofillMetrics::LogUserHappinessMetric(UserHappinessMetric metric) const {
+  DCHECK(metric < NUM_USER_HAPPINESS_METRICS);
+
+  // TODO(isherman): Useful for manual testing, but should be removed prior to
+  // committing.
+  switch (metric) {
+    case FORMS_LOADED:
+      DLOG(WARNING) << "LogUserHappinessMetric(FORMS_LOADED)";
+      break;
+    case FORM_SUBMITTED_WITHOUT_AUTOFILL:
+      DLOG(WARNING) << "LogUserHappinessMetric(FORM_SUBMITTED_WITHOUT_AUTOFILL)";
+      break;
+    case FORM_SUBMITTED_AFTER_AUTOFILL:
+      DLOG(WARNING) << "LogUserHappinessMetric(FORM_SUBMITTED_AFTER_AUTOFILL)";
+      break;
+    case USER_DID_TYPE:
+      DLOG(WARNING) << "LogUserHappinessMetric(USER_DID_TYPE)";
+      break;
+    case SUBMITTED_FORM_COULD_HAVE_BEEN_AUTOFILLED:
+      DLOG(WARNING) << "LogUserHappinessMetric(SUBMITTED_FORM_COULD_HAVE_BEEN_AUTOFILLED)";
+      break;
+    case SUGGESTIONS_SHOWN:
+      DLOG(WARNING) << "LogUserHappinessMetric(SUGGESTIONS_SHOWN)";
+      break;
+    case SUGGESTIONS_SHOWN_FIRST_TIME:
+      DLOG(WARNING) << "LogUserHappinessMetric(SUGGESTIONS_SHOWN_FIRST_TIME)";
+      break;
+    case USER_DID_AUTOFILL:
+      DLOG(WARNING) << "LogUserHappinessMetric(USER_DID_AUTOFILL)";
+      break;
+    case USER_DID_AUTOFILL_FIRST_TIME:
+      DLOG(WARNING) << "LogUserHappinessMetric(USER_DID_AUTOFILL_FIRST_TIME)";
+      break;
+    case USER_DID_EDIT_AUTOFILLED_FIELD:
+      DLOG(WARNING) << "LogUserHappinessMetric(USER_DID_EDIT_AUTOFILLED_FIELD)";
+      break;
+    default:
+      DLOG(WARNING) << "I have no idea what you're talking about.";
+  }
+
+  UMA_HISTOGRAM_ENUMERATION("Autofill.UserHappiness", metric,
+                            NUM_USER_HAPPINESS_METRICS);
+}
+
 void AutofillMetrics::LogIsAutofillEnabledAtStartup(bool enabled) const {
   UMA_HISTOGRAM_BOOLEAN("Autofill.IsEnabled.Startup", enabled);
 }