Added and replaced some UMAs

chrome/browser/translate/translate_manager_metrics.h

Index: chrome/browser/translate/translate_manager_metrics.h
diff --git a/chrome/browser/translate/translate_manager_metrics.h b/chrome/browser/translate/translate_manager_metrics.h
index f037cfe55d5b5712133a64343e231287697250e3..91dbcf37b4ba906f7a4360664a164d30ef6c82f0 100644
--- a/chrome/browser/translate/translate_manager_metrics.h
+++ b/chrome/browser/translate/translate_manager_metrics.h
@@ -5,6 +5,8 @@
 #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.
@@ -12,7 +14,9 @@ namespace TranslateManagerMetrics {
 enum MetricsNameIndex {
   UMA_INITIATION_STATUS,
   UMA_LANGUAGE_DETECTION_ERROR,
-  UMA_SERVER_REPORTED_UNSUPPORTED_LANGUAGE,
+  UMA_SERVER_REPORTED_UNSUPPORTED_LANGUAGE, // obsolete

[Takashi Toyoshima, 2013/05/21 11:11:43]

Remove obsoleted enum ID.
It's ok to reuse the same enum ID for another uMA.

[hajimehoshi, 2013/05/22 04:19:27]

Done.

+  UMA_UNAVAILABLE_LANGUAGE,
+  UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION,
   UMA_MAX,
 };
 
@@ -42,7 +46,10 @@ void ReportInitiationStatus(InitiationStatusType type);
 void ReportLanguageDetectionError();
 
 // Called when it turns out that translating page is in unsupported language.
-void ReportUnsupportedLanguage();
+// |language| is a language code of ISO 639.
+void ReportUnavailableLanguage(const std::string& language);
+
+void ReportUnsupportedLanguageAtInitiation(const std::string& language);
 
 // Provides UMA entry names for unit tests.
 const char* GetMetricsName(MetricsNameIndex index);