Revert 202427 "Translate: adopt html lang attribute if valid val..."

trunk/src/tools/metrics/histograms/histograms.xml

Index: trunk/src/tools/metrics/histograms/histograms.xml
===================================================================
--- trunk/src/tools/metrics/histograms/histograms.xml	(revision 202442)
+++ trunk/src/tools/metrics/histograms/histograms.xml	(working copy)
@@ -8950,20 +8950,13 @@
   </summary>
 </histogram>
 
-<histogram name="Translate.ContentLanguage" enum="TranslateLanguage">
+<histogram name="Translate.ContentLanguage" enum="TranslateContentLanguage">
   <summary>
     A page may provide a Content-Language HTTP header or a META tag. For each
     page load, measures whether the Content-Language header exists and is valid.
   </summary>
 </histogram>
 
-<histogram name="Translate.HtmlLang" enum="TranslateLanguage">
-  <summary>
-    A page may provide a lang attribute in html tag. For each page load,
-    measures whether the lang attribute exists and is valid.
-  </summary>
-</histogram>
-
 <histogram name="Translate.InitiationStatus" enum="TranslateInitiationStatus">
   <summary>
     The reason why Chrome decided to perform the next action (e.g., to show
@@ -14055,6 +14048,12 @@
   </int>
 </enum>
 
+<enum name="TranslateContentLanguage" type="int">
+  <int value="0" label="No Content-Language"/>
+  <int value="1" label="Valid Content-Language"/>
+  <int value="2" label="Invalid Content-Language"/>
+</enum>
+
 <enum name="TranslateError" type="int">
   <int value="0" label="No error"/>
   <int value="1" label="Network error"/>
@@ -14078,12 +14077,6 @@
   <int value="9" label="Show infobar"/>
 </enum>
 
-<enum name="TranslateLanguage" type="int">
-  <int value="0" label="No language code"/>
-  <int value="1" label="Valid language code"/>
-  <int value="2" label="Invalid language code"/>
-</enum>
-
 <enum name="TranslateLanguageVerification" type="int">
   <int value="0" label="CLD is disabled"/>
   <int value="1" label="No Content-Language"/>