Translate: Filter and record languages whose names Chrome doesn't show

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 6aef71037a6280fe34b6a00858f65c86161606b8..13c1614db06ff8ed1e25065c746edcb6dd00fae1 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -9426,6 +9426,9 @@ other types of suffix sets.
 </histogram>
 
 <histogram name="Translate.ServerReportedUnsupportedLanguage">
+  <obsolete>
+    Deprecated 5/2013 by Translate.Unsu

[Ilya Sherman, 2013/06/01 00:59:47]

Looks like the text got cut off mid-word.

[hajimehoshi, 2013/06/05 04:44:05]

Done.

+  </obsolete>
   <summary>
     The number of times the detected language is not supported by Translate
     Element.
@@ -9474,6 +9477,15 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Translate.UndisplayableLanguage" enum="LanguageCode">
+  <summary>
+    Logs an undisplayable language are included in the language list sent by the

[Ilya Sherman, 2013/06/01 00:59:47]

nit: "Logs an undisplayable language are included" -> "Logs an undisplayable
language included"

[hajimehoshi, 2013/06/05 04:44:05]

Done.

+    Translate server. The Translate server sends the list each time the user
+    runs Chrome. This metrics tells us that there is a language which UI should

[Ilya Sherman, 2013/06/01 00:59:47]

nit: "which UI should deal with" -> "which the UI should support"

[hajimehoshi, 2013/06/05 04:44:05]

Done.

+    deal with but doesn't.
+  </summary>
+</histogram>
+
 <histogram name="Translate.UnsupportedLanguageAtInitiation" enum="LanguageCode">
   <summary>
     Logs an unsupported source language detected during initiation of the