Clean up Noto Sans UI stuff.

ui/strings/translations/app_locale_settings_ko.xtb

Index: ui/strings/translations/app_locale_settings_ko.xtb
diff --git a/ui/strings/translations/app_locale_settings_ko.xtb b/ui/strings/translations/app_locale_settings_ko.xtb
index 904469bb13e092d2be5e94aa20b2124d7a11e3ae..b01ff611c2884aada415987dfe2e126f50dc7b00 100644
--- a/ui/strings/translations/app_locale_settings_ko.xtb
+++ b/ui/strings/translations/app_locale_settings_ko.xtb
@@ -2,7 +2,6 @@
 <!DOCTYPE translationbundle>
 <translationbundle lang="ko">
 <translation id="IDS_MINIMUM_UI_FONT_SIZE">10</translation>
-<translation id="IDS_UI_FONT_FAMILY_CROS">Noto Sans UI,Noto Sans CJK KR, 13px</translation>
 <if expr="is_win">
   <translation id="IDS_WEB_FONT_FAMILY">'Segoe UI',Arial,'Malgun Gothic',Gulim,sans-serif</translation>
   <translation id="IDS_WEB_FONT_FAMILY_XP">Arial,'Malgun Gothic',Gulim,sans-serif</translation>
@@ -14,6 +13,7 @@
   <translation id="IDS_WEB_FONT_FAMILY">Noto Sans CJK KR,NanumGothic,UnDotum,Baekmuk Gulim,sans-serif</translation>
 </if>
 <if expr="chromeos">
-  <translation id="IDS_WEB_FONT_FAMILY">Noto Sans UI, Noto Sans CJK KR, sans-serif</translation>
+  <translation id="IDS_UI_FONT_FAMILY_CROS">Roboto, Noto Sans CJK KR, 13px</translation>
+  <translation id="IDS_WEB_FONT_FAMILY">Roboto, Noto Sans CJK KR, sans-serif</translation>
 </if>
 </translationbundle>