Translate: move UMA related code in TranslateManager to TranslateManagerMetrics

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_
 
 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_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,
   INITIATION_STATUS_URL_IS_NOT_SUPPORTED,
   INITIATION_STATUS_SIMILAR_LANGUAGES,
   INITIATION_STATUS_ACCEPT_LANGUAGES,
 
   INITIATION_STATUS_AUTO_BY_CONFIG,
   INITIATION_STATUS_AUTO_BY_LINK,
   INITIATION_STATUS_SHOW_INFOBAR,
 
   INITIATION_STATUS_MAX,
 };
 
 // Called when Chrome Translate is initiated to report a reason of the next
 // browser action.
 void ReportInitiationStatus(InitiationStatusType type);
 
+// Called when Chrome opens the URL so that the user sends an error feedback.
+void ReportLanguageDetectionError();
+
+// Called when it's turned out that translating page is in unsupported language.

[MAD, 2013/05/15 01:32:48]

it's turned -> it turns 

[Takashi Toyoshima, 2013/05/15 07:35:04]

thanks!

+void ReportUnsupportedLanguage();
+
 // Provides UMA entry names for unit tests.
 const char* GetMetricsName(MetricsNameIndex index);
 
 }  // namespace TranslateManagerMetrics
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_MANAGER_METRICS_H_