Backed out changeset 898739a110fc (bug 1369801)

MozReview-Commit-ID: AFOT8Td2XXX

devtools/client/themes/firebug-theme.css

@@ -7,7 +7,7 @@
 @import url(resource://devtools/client/themes/common.css);
 @import url(chrome://devtools/skin/light-theme.css);
 
-:root.theme-firebug {
+:root {
   font-size: 11px;
   font-family: var(--proportional-font-family);
 }