Rename for some supervised users ambiguity. Adding child account icon to the avatar menu bubble.

chrome/browser/resources/user_manager/user_manager.css

Index: chrome/browser/resources/user_manager/user_manager.css
diff --git a/chrome/browser/resources/user_manager/user_manager.css b/chrome/browser/resources/user_manager/user_manager.css
index babcbb91272ce6c5687ec84d94502d5814839b9c..fa20664b50109984179e8afe7611510472028338 100644
--- a/chrome/browser/resources/user_manager/user_manager.css
+++ b/chrome/browser/resources/user_manager/user_manager.css
@@ -114,8 +114,8 @@ html[dir=rtl] .pod .indicators {
 
 .pod.legacy-supervised .supervised-indicator {
   background-image: -webkit-image-set(
-      url(chrome://theme/IDR_ICON_PROFILES_SUPERVISED) 1x,
-      url(chrome://theme/IDR_ICON_PROFILES_SUPERVISED@2x) 2x);
+      url(chrome://theme/IDR_ICON_PROFILES_LEGACY_SUPERVISED) 1x,
+      url(chrome://theme/IDR_ICON_PROFILES_LEGACY_SUPERVISED@2x) 2x);
   display: initial;
 }