Add Ash.Wallpaper.{DefaultIndex,Type} to histograms.xml.

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc

Index: chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
diff --git a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
index e5c2b1dfdb2149c02fdddea45e03c40974919cb3..1bce55d7f5247c4bfbd7698dee033eb3e037f67d 100644
--- a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
+++ b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.cc
@@ -531,8 +531,8 @@ void WallpaperManager::EnsureLoggedInUserWallpaperLoaded() {
 
   WallpaperInfo info;
   if (GetLoggedInUserWallpaperInfo(&info)) {
-    // TODO(sschmitz): We need an index for default wallpapers for the new UI.
-    RecordUma(info.type, -1);
+    UMA_HISTOGRAM_ENUMERATION("Ash.Wallpaper.Type", info.type,
+                              user_manager::User::WALLPAPER_TYPE_COUNT);
     if (info == current_user_wallpaper_info_)
       return;
   }
@@ -1008,13 +1008,6 @@ void WallpaperManager::DoSetDefaultWallpaper(
 }
 
 // static
-void WallpaperManager::RecordUma(user_manager::User::WallpaperType type,
-                                 int index) {
-  UMA_HISTOGRAM_ENUMERATION(
-      "Ash.Wallpaper.Type", type, user_manager::User::WALLPAPER_TYPE_COUNT);
-}
-
-// static
 void WallpaperManager::SaveCustomWallpaper(const std::string& user_id_hash,
                                            const base::FilePath& original_path,
                                            ash::WallpaperLayout layout,