--- a/layout/style/jar.mn
+++ b/layout/style/jar.mn
@@ -1,15 +1,15 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 toolkit.jar:
 *  res/ua.css                                (res/ua.css)
-*  res/html.css                              (res/html.css)
+   res/html.css                              (res/html.css)
    res/quirk.css                             (res/quirk.css)
    res/plaintext.css                         (res/plaintext.css)
    res/viewsource.css                        (res/viewsource.css)
    res/counterstyles.css                     (res/counterstyles.css)
    res/noscript.css                          (res/noscript.css)
    res/noframes.css                          (res/noframes.css)
 *  res/forms.css                             (res/forms.css)
    res/number-control.css                    (res/number-control.css)

--- a/layout/style/res/html.css
+++ b/layout/style/res/html.css
@@ -826,22 +826,17 @@ rt {
 rtc {
   display: ruby-text-container;
 }
 rtc, rt {
   white-space: nowrap;
   font-size: 50%;
   -moz-min-font-size-ratio: 50%;
   line-height: 1;
-%ifndef XP_WIN
-  /* The widely-used Windows font Meiryo doesn't work fine with this
-   * setting, so disable this on Windows. We should re-enable it once
-   * Microsoft fixes this issue. See bug 1164279. */
   font-variant-east-asian: ruby;
-%endif
 }
 rtc, rt {
   text-emphasis: none;
 }
 rtc:lang(zh), rt:lang(zh) {
   ruby-align: center;
 }
 rtc:lang(zh-TW), rt:lang(zh-TW) {