Add the new UMA key 'Translate.LocalesOnDisabledByPrefs'.

chrome/browser/translate/translate_manager_metrics.h

 // 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.
 
 #ifndef CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_METRICS_H_
 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_METRICS_H_
 
 #include <string>
 
 namespace TranslateManagerMetrics {
 
 // An indexing type to query each UMA entry name via GetMetricsName() function.
 // Note: |kMetricsEntries| should be updated when a new entry is added here.
 enum MetricsNameIndex {
   UMA_INITIATION_STATUS,
   UMA_LANGUAGE_DETECTION_ERROR,
   UMA_SERVER_REPORTED_UNSUPPORTED_LANGUAGE,
   UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION,
+  UMA_LOCALES_ON_DISABLED_BY_PREFS,
   UMA_MAX,
 };
 
 // When Chrome Translate is ready to translate a page, one of following reason
 // decide the next browser action.
 enum InitiationStatusType {
   INITIATION_STATUS_DISABLED_BY_PREFS,
   INITIATION_STATUS_DISABLED_BY_SWITCH,
   INITIATION_STATUS_DISABLED_BY_CONFIG,
   INITIATION_STATUS_LANGUAGE_IS_NOT_SUPPORTED,
@@ skipping 13 matching lines @@
 void ReportInitiationStatus(InitiationStatusType type);
 
 // Called when Chrome opens the URL so that the user sends an error feedback.
 void ReportLanguageDetectionError();
 
 // Called when it turns out that translating page is in unsupported language.
 void ReportUnsupportedLanguage();
 
 void ReportUnsupportedLanguageAtInitiation(const std::string& language);
 
+void ReportLocalesOnDisabledByPrefs(const std::string& locale);
+
 // Provides UMA entry names for unit tests.
 const char* GetMetricsName(MetricsNameIndex index);
 
 }  // namespace TranslateManagerMetrics
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_METRICS_H_