Add metrics to track Autofill "user happiness"

chrome/browser/autofill/autofill_metrics.cc

 // Copyright (c) 2011 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 "chrome/browser/autofill/autofill_metrics.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/autofill/autofill_type.h"
 #include "chrome/browser/autofill/form_structure.h"
@@ skipping 270 matching lines @@
   LogUMAHistogramEnumeration(histogram_name, metric, NUM_QUALITY_METRICS);
 }
 
 void AutofillMetrics::LogServerQueryMetric(ServerQueryMetric metric) const {
   DCHECK(metric < NUM_SERVER_QUERY_METRICS);
 
   UMA_HISTOGRAM_ENUMERATION("Autofill.ServerQueryResponse", metric,
                             NUM_SERVER_QUERY_METRICS);
 }
 
+void AutofillMetrics::LogUserHappinessMetric(UserHappinessMetric metric) const {
+  DCHECK(metric < NUM_USER_HAPPINESS_METRICS);
+
+  UMA_HISTOGRAM_ENUMERATION("Autofill.UserHappiness", metric,
+                            NUM_USER_HAPPINESS_METRICS);
+}
+
 void AutofillMetrics::LogIsAutofillEnabledAtStartup(bool enabled) const {
   UMA_HISTOGRAM_BOOLEAN("Autofill.IsEnabled.Startup", enabled);
 }
 
 void AutofillMetrics::LogIsAutofillEnabledAtPageLoad(bool enabled) const {
   UMA_HISTOGRAM_BOOLEAN("Autofill.IsEnabled.PageLoad", enabled);
 }
 
 void AutofillMetrics::LogStoredProfileCount(size_t num_profiles) const {
   UMA_HISTOGRAM_COUNTS("Autofill.StoredProfileCount", num_profiles);
 }
 
 void AutofillMetrics::LogAddressSuggestionsCount(size_t num_suggestions) const {
   UMA_HISTOGRAM_COUNTS("Autofill.AddressSuggestionsCount", num_suggestions);
 }
 
 void AutofillMetrics::LogServerExperimentIdForQuery(
     const std::string& experiment_id) const {
   LogServerExperimentId("Autofill.ServerExperimentId.Query", experiment_id);
 }
 
 void AutofillMetrics::LogServerExperimentIdForUpload(
     const std::string& experiment_id) const {
   LogServerExperimentId("Autofill.ServerExperimentId.Upload", experiment_id);
 }