Added and replaced some UMAs

chrome/browser/translate/translate_manager_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 "chrome/browser/translate/translate_manager_metrics.h"
 
+#include <string>
+
 #include "base/basictypes.h"
 #include "base/metrics/histogram.h"
+#include "base/metrics/sparse_histogram.h"
+#include "chrome/browser/language_usage_metrics.h"
 
 namespace {
 
 // Constant string values to indicate UMA names. All entries should have
 // a corresponding index in MetricsNameIndex and an entry in |kMetricsEntries|.
 const char kTranslateInitiationStatus[] =
     "Translate.InitiationStatus";
 const char kTranslateReportLanguageDetectionError[] =
     "Translate.ReportLanguageDetectionError";
-const char kTranslateServerReportedUnsupportedLanguage[] =
-    "Translate.ServerReportedUnsupportedLanguage";
+const char kTranslateUnavailableLanguage[] =
+    "Translate.UnavailableLanguage";
+const char kTranslateUnsupportedLanguageAtInitiation[] =
+    "Translate.UnsupportedLanguageAtInitiation";
 
 struct MetricsEntry {
   TranslateManagerMetrics::MetricsNameIndex index;
   const char* const name;
 };
 
 // This entry table should be updated when new UMA items are added.
 const MetricsEntry kMetricsEntries[] = {
   { TranslateManagerMetrics::UMA_INITIATION_STATUS,
     kTranslateInitiationStatus },
   { TranslateManagerMetrics::UMA_LANGUAGE_DETECTION_ERROR,
     kTranslateReportLanguageDetectionError },
-  { TranslateManagerMetrics::UMA_SERVER_REPORTED_UNSUPPORTED_LANGUAGE,
-    kTranslateServerReportedUnsupportedLanguage },
+  { TranslateManagerMetrics::UMA_UNAVAILABLE_LANGUAGE,
+    kTranslateUnavailableLanguage },
+  { TranslateManagerMetrics::UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION,
+    kTranslateUnsupportedLanguageAtInitiation },
 };
 
 COMPILE_ASSERT(arraysize(kMetricsEntries) == TranslateManagerMetrics::UMA_MAX,
                arraysize_of_kMetricsEntries_should_be_UMA_MAX);
 
 }  // namespace
 
 namespace TranslateManagerMetrics {
 
 void ReportInitiationStatus(InitiationStatusType type) {
   UMA_HISTOGRAM_ENUMERATION(kTranslateInitiationStatus,
                             type,
                             INITIATION_STATUS_MAX);
 }
 
 void ReportLanguageDetectionError() {
   UMA_HISTOGRAM_COUNTS(kTranslateReportLanguageDetectionError, 1);
 }
 
-void ReportUnsupportedLanguage() {
-  UMA_HISTOGRAM_COUNTS(kTranslateServerReportedUnsupportedLanguage, 1);
+void ReportUnavailableLanguage(const std::string& language) {
+  int language_code = LanguageUsageMetrics::ToLanguageCode(language);
+  UMA_HISTOGRAM_SPARSE_SLOWLY(kTranslateUnavailableLanguage,
+                              language_code);
+}
+
+void ReportUnsupportedLanguageAtInitiation(const std::string& language) {
+  int language_code = LanguageUsageMetrics::ToLanguageCode(language);
+  UMA_HISTOGRAM_SPARSE_SLOWLY(kTranslateUnsupportedLanguageAtInitiation,
+                              language_code);
 }
 
 const char* GetMetricsName(MetricsNameIndex index) {
   for (size_t i = 0; i < arraysize(kMetricsEntries); ++i) {
     if (kMetricsEntries[i].index == index)
       return kMetricsEntries[i].name;
   }
   NOTREACHED();
   return NULL;
 }
 
 }  // namespace TranslateManagerMetrics