[Autofill, Clean-up] Clean up the Autofill metrics tests.

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 "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/time/time.h"
 #include "components/autofill/core/browser/autofill_type.h"
 #include "components/autofill/core/browser/form_structure.h"
 #include "components/autofill/core/common/form_data.h"
 
 namespace autofill {
 
 namespace {
 
 enum FieldTypeGroupForMetrics {
-  AMBIGUOUS = 0,
-  NAME,
-  COMPANY,
-  ADDRESS_LINE_1,
-  ADDRESS_LINE_2,
-  ADDRESS_CITY,
-  ADDRESS_STATE,
-  ADDRESS_ZIP,
-  ADDRESS_COUNTRY,
-  PHONE,
-  FAX,  // Deprecated.
-  EMAIL,
-  CREDIT_CARD_NAME,
-  CREDIT_CARD_NUMBER,
-  CREDIT_CARD_DATE,
-  CREDIT_CARD_TYPE,
-  PASSWORD,
-  ADDRESS_LINE_3,
+  GROUP_AMBIGUOUS = 0,
+  GROUP_NAME,
+  GROUP_COMPANY,
+  GROUP_ADDRESS_LINE_1,
+  GROUP_ADDRESS_LINE_2,
+  GROUP_ADDRESS_CITY,
+  GROUP_ADDRESS_STATE,
+  GROUP_ADDRESS_ZIP,
+  GROUP_ADDRESS_COUNTRY,
+  GROUP_PHONE,
+  GROUP_FAX,  // Deprecated.
+  GROUP_EMAIL,
+  GROUP_CREDIT_CARD_NAME,
+  GROUP_CREDIT_CARD_NUMBER,
+  GROUP_CREDIT_CARD_DATE,
+  GROUP_CREDIT_CARD_TYPE,
+  GROUP_PASSWORD,
+  GROUP_ADDRESS_LINE_3,
   NUM_FIELD_TYPE_GROUPS_FOR_METRICS
 };
 
+}  // namespace
+
 // First, translates |field_type| to the corresponding logical |group| from
 // |FieldTypeGroupForMetrics|.  Then, interpolates this with the given |metric|,
 // which should be in the range [0, |num_possible_metrics|).
 // Returns the interpolated index.
 //
 // The interpolation maps the pair (|group|, |metric|) to a single index, so
 // that all the indicies for a given group are adjacent.  In particular, with
 // the groups {AMBIGUOUS, NAME, ...} combining with the metrics {UNKNOWN, MATCH,
 // MISMATCH}, we create this set of mapped indices:
 // {
 //   AMBIGUOUS+UNKNOWN,
 //   AMBIGUOUS+MATCH,
 //   AMBIGUOUS+MISMATCH,
 //   NAME+UNKNOWN,
 //   NAME+MATCH,
 //   NAME+MISMATCH,
 //   ...
 // }.
 //
 // Clients must ensure that |field_type| is one of the types Chrome supports
 // natively, e.g. |field_type| must not be a billng address.
-int GetFieldTypeGroupMetric(const ServerFieldType field_type,
-                            const int metric,
-                            const int num_possible_metrics) {
-  DCHECK_LT(metric, num_possible_metrics);
+// NOTE: This is defined outside of the anonymous namespace so that it can be
+// accessed from the unit test file. It is not exposed in the header file,
+// however, because it is not intended for consumption outside of the metrics
+// implementation.
+int GetFieldTypeGroupMetric(ServerFieldType field_type,
+                            AutofillMetrics::FieldTypeQualityMetric metric) {
+  DCHECK_LT(metric, AutofillMetrics::NUM_FIELD_TYPE_QUALITY_METRICS);
 
-  FieldTypeGroupForMetrics group = AMBIGUOUS;
+  FieldTypeGroupForMetrics group = GROUP_AMBIGUOUS;
   switch (AutofillType(field_type).group()) {
-    case ::autofill::NO_GROUP:
-      group = AMBIGUOUS;
+    case NO_GROUP:
+      group = GROUP_AMBIGUOUS;
       break;
 
-    case ::autofill::NAME:
-    case ::autofill::NAME_BILLING:
-      group = NAME;
+    case NAME:
+    case NAME_BILLING:
+      group = GROUP_NAME;
       break;
 
-    case ::autofill::COMPANY:
-      group = COMPANY;
+    case COMPANY:
+      group = GROUP_COMPANY;
       break;
 
-    case ::autofill::ADDRESS_HOME:
-    case ::autofill::ADDRESS_BILLING:
+    case ADDRESS_HOME:
+    case ADDRESS_BILLING:
       switch (AutofillType(field_type).GetStorableType()) {
         case ADDRESS_HOME_LINE1:
-          group = ADDRESS_LINE_1;
+          group = GROUP_ADDRESS_LINE_1;
           break;
         case ADDRESS_HOME_LINE2:
-          group = ADDRESS_LINE_2;
+          group = GROUP_ADDRESS_LINE_2;
           break;
         case ADDRESS_HOME_LINE3:
-          group = ADDRESS_LINE_3;
+          group = GROUP_ADDRESS_LINE_3;
           break;
         case ADDRESS_HOME_CITY:
-          group = ADDRESS_CITY;
+          group = GROUP_ADDRESS_CITY;
           break;
         case ADDRESS_HOME_STATE:
-          group = ADDRESS_STATE;
+          group = GROUP_ADDRESS_STATE;
           break;
         case ADDRESS_HOME_ZIP:
-          group = ADDRESS_ZIP;
+          group = GROUP_ADDRESS_ZIP;
           break;
         case ADDRESS_HOME_COUNTRY:
-          group = ADDRESS_COUNTRY;
+          group = GROUP_ADDRESS_COUNTRY;
           break;
         default:
           NOTREACHED();
-          group = AMBIGUOUS;
+          group = GROUP_AMBIGUOUS;
           break;
       }
       break;
 
-    case ::autofill::EMAIL:
-      group = EMAIL;
+    case EMAIL:
+      group = GROUP_EMAIL;
       break;
 
-    case ::autofill::PHONE_HOME:
-    case ::autofill::PHONE_BILLING:
-      group = PHONE;
+    case PHONE_HOME:
+    case PHONE_BILLING:
+      group = GROUP_PHONE;
       break;
 
-    case ::autofill::CREDIT_CARD:
+    case CREDIT_CARD:
       switch (field_type) {
-        case ::autofill::CREDIT_CARD_NAME:
-          group = CREDIT_CARD_NAME;
+        case CREDIT_CARD_NAME:
+          group = GROUP_CREDIT_CARD_NAME;
           break;
-        case ::autofill::CREDIT_CARD_NUMBER:
-          group = CREDIT_CARD_NUMBER;
+        case CREDIT_CARD_NUMBER:
+          group = GROUP_CREDIT_CARD_NUMBER;
           break;
-        case ::autofill::CREDIT_CARD_TYPE:
-          group = CREDIT_CARD_TYPE;
+        case CREDIT_CARD_TYPE:
+          group = GROUP_CREDIT_CARD_TYPE;
           break;
-        case ::autofill::CREDIT_CARD_EXP_MONTH:
-        case ::autofill::CREDIT_CARD_EXP_2_DIGIT_YEAR:
-        case ::autofill::CREDIT_CARD_EXP_4_DIGIT_YEAR:
-        case ::autofill::CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR:
-        case ::autofill::CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR:
-          group = CREDIT_CARD_DATE;
+        case CREDIT_CARD_EXP_MONTH:
+        case CREDIT_CARD_EXP_2_DIGIT_YEAR:
+        case CREDIT_CARD_EXP_4_DIGIT_YEAR:
+        case CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR:
+        case CREDIT_CARD_EXP_DATE_4_DIGIT_YEAR:
+          group = GROUP_CREDIT_CARD_DATE;
           break;
         default:
           NOTREACHED();
-          group = AMBIGUOUS;
+          group = GROUP_AMBIGUOUS;
           break;
       }
       break;
 
-    case ::autofill::PASSWORD_FIELD:
-      group = PASSWORD;
+    case PASSWORD_FIELD:
+      group = GROUP_PASSWORD;
       break;
 
-    case ::autofill::TRANSACTION:
+    case TRANSACTION:
       NOTREACHED();
       break;
   }
 
   // Interpolate the |metric| with the |group|, so that all metrics for a given
   // |group| are adjacent.
-  return (group * num_possible_metrics) + metric;
+  return (group * AutofillMetrics::NUM_FIELD_TYPE_QUALITY_METRICS) + metric;
 }
 
+namespace {
+
 std::string WalletApiMetricToString(
     AutofillMetrics::WalletApiCallMetric metric) {
   switch (metric) {
     case AutofillMetrics::ACCEPT_LEGAL_DOCUMENTS:
       return "AcceptLegalDocuments";
     case AutofillMetrics::AUTHENTICATE_INSTRUMENT:
       return "AuthenticateInstrument";
     case AutofillMetrics::GET_FULL_WALLET:
       return "GetFullWallet";
     case AutofillMetrics::GET_WALLET_ITEMS:
@@ skipping 56 matching lines @@
           50,
           base::HistogramBase::kUmaTargetedHistogramFlag);
   histogram->AddTime(duration);
 }
 
 // Logs a type quality metric.  The primary histogram name is constructed based
 // on |base_name|.  The field-specific histogram name also factors in the
 // |field_type|.  Logs a sample of |metric|, which should be in the range
 // [0, |num_possible_metrics|).
 void LogTypeQualityMetric(const std::string& base_name,
-                          const int metric,
-                          const int num_possible_metrics,
-                          const ServerFieldType field_type) {
-  DCHECK_LT(metric, num_possible_metrics);
+                          AutofillMetrics::FieldTypeQualityMetric metric,
+                          ServerFieldType field_type) {
+  DCHECK_LT(metric, AutofillMetrics::NUM_FIELD_TYPE_QUALITY_METRICS);
 
-  std::string histogram_name = base_name;
-  LogUMAHistogramEnumeration(histogram_name, metric, num_possible_metrics);
+  LogUMAHistogramEnumeration(base_name, metric,
+                             AutofillMetrics::NUM_FIELD_TYPE_QUALITY_METRICS);
 
-  std::string sub_histogram_name = base_name + ".ByFieldType";
-  const int field_type_group_metric =
-      GetFieldTypeGroupMetric(field_type, metric, num_possible_metrics);
-  const int num_field_type_group_metrics =
-      num_possible_metrics * NUM_FIELD_TYPE_GROUPS_FOR_METRICS;
-  LogUMAHistogramEnumeration(sub_histogram_name,
+  int field_type_group_metric = GetFieldTypeGroupMetric(field_type, metric);
+  int num_field_type_group_metrics =
+      AutofillMetrics::NUM_FIELD_TYPE_QUALITY_METRICS *
+      NUM_FIELD_TYPE_GROUPS_FOR_METRICS;
+  LogUMAHistogramEnumeration(base_name + ".ByFieldType",
                              field_type_group_metric,
                              num_field_type_group_metrics);
 }
 
 }  // namespace
 
 AutofillMetrics::AutofillMetrics() {
 }
 
 AutofillMetrics::~AutofillMetrics() {
 }
 
 void AutofillMetrics::LogCreditCardInfoBarMetric(InfoBarMetric metric) const {
   DCHECK_LT(metric, NUM_INFO_BAR_METRICS);
-
   UMA_HISTOGRAM_ENUMERATION("Autofill.CreditCardInfoBar", metric,
                             NUM_INFO_BAR_METRICS);
 }
 
 void AutofillMetrics::LogDialogDismissalState(
     DialogDismissalState state) const {
   UMA_HISTOGRAM_ENUMERATION("RequestAutocomplete.DismissalState",
                             state, NUM_DIALOG_DISMISSAL_STATES);
 }
 
@@ skipping 67 matching lines @@
                             required_action, NUM_WALLET_REQUIRED_ACTIONS);
 }
 
 void AutofillMetrics::LogWalletResponseCode(int response_code) const {
   UMA_HISTOGRAM_SPARSE_SLOWLY("Wallet.ResponseCode", response_code);
 }
 
 void AutofillMetrics::LogDeveloperEngagementMetric(
     DeveloperEngagementMetric metric) const {
   DCHECK_LT(metric, NUM_DEVELOPER_ENGAGEMENT_METRICS);
-
   UMA_HISTOGRAM_ENUMERATION("Autofill.DeveloperEngagement", metric,
                             NUM_DEVELOPER_ENGAGEMENT_METRICS);
 }
 
 void AutofillMetrics::LogHeuristicTypePrediction(
     FieldTypeQualityMetric metric,
     ServerFieldType field_type) const {
-  LogTypeQualityMetric("Autofill.Quality.HeuristicType",
-                       metric, NUM_FIELD_TYPE_QUALITY_METRICS, field_type);
+  LogTypeQualityMetric("Autofill.Quality.HeuristicType", metric, field_type);
 }
 
 void AutofillMetrics::LogOverallTypePrediction(
     FieldTypeQualityMetric metric,
     ServerFieldType field_type) const {
-  LogTypeQualityMetric("Autofill.Quality.PredictedType",
-                       metric, NUM_FIELD_TYPE_QUALITY_METRICS, field_type);
+  LogTypeQualityMetric("Autofill.Quality.PredictedType", metric, field_type);
 }
 
 void AutofillMetrics::LogServerTypePrediction(
     FieldTypeQualityMetric metric,
     ServerFieldType field_type) const {
-  LogTypeQualityMetric("Autofill.Quality.ServerType",
-                       metric, NUM_FIELD_TYPE_QUALITY_METRICS, field_type);
+  LogTypeQualityMetric("Autofill.Quality.ServerType", metric, field_type);
 }
 
 void AutofillMetrics::LogServerQueryMetric(ServerQueryMetric metric) const {
   DCHECK_LT(metric, NUM_SERVER_QUERY_METRICS);
-
   UMA_HISTOGRAM_ENUMERATION("Autofill.ServerQueryResponse", metric,
                             NUM_SERVER_QUERY_METRICS);
 }
 
 void AutofillMetrics::LogUserHappinessMetric(UserHappinessMetric metric) const {
   DCHECK_LT(metric, NUM_USER_HAPPINESS_METRICS);
-
   UMA_HISTOGRAM_ENUMERATION("Autofill.UserHappiness", metric,
                             NUM_USER_HAPPINESS_METRICS);
 }
 
 void AutofillMetrics::LogFormFillDurationFromLoadWithAutofill(
     const base::TimeDelta& duration) const {
   UMA_HISTOGRAM_CUSTOM_TIMES("Autofill.FillDuration.FromLoad.WithAutofill",
                              duration,
                              base::TimeDelta::FromMilliseconds(100),
                              base::TimeDelta::FromMinutes(10),
@@ skipping 39 matching lines @@
 
 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);
 }
 
 }  // namespace autofill