Backing out bug 541406 due to test failure

layout/style/html.css

@@ -596,17 +596,14 @@ canvas {
 }
 
 /* focusable content: anything w/ tabindex >=0 is focusable */
-abbr:focus, acronym:focus, address:focus,
-applet:focus:not(:-moz-suppressed):not(:-moz-user-disabled):not(:-moz-broken),
-b:focus,
+abbr:focus, acronym:focus, address:focus, applet:focus, b:focus, 
 base:focus, big:focus, blockquote:focus, br:focus, canvas:focus, caption:focus,
 center:focus, cite:focus, code:focus, col:focus, colgroup:focus, dd:focus,
 del:focus, dfn:focus, dir:focus, div:focus, dl:focus, dt:focus, em:focus,
 fieldset:focus, font:focus, form:focus, h1:focus, h2:focus, h3:focus, h4:focus,
 h5:focus, h6:focus, hr:focus, i:focus, img:focus, ins:focus, 
 kbd:focus, label:focus, legend:focus, li:focus, link:focus, menu:focus, 
-object:focus:not(:-moz-suppressed):not(:-moz-user-disabled):not(:-moz-broken),
-ol:focus, p:focus, pre:focus, q:focus, s:focus, samp:focus, 
+object:focus, ol:focus, p:focus, pre:focus, q:focus, s:focus, samp:focus, 
 small:focus, span:focus, strike:focus, strong:focus, sub:focus, sup:focus, 
 table:focus, tbody:focus, td:focus, tfoot:focus, th:focus, thead:focus, 
 tr:focus, tt:focus, u:focus, ul:focus, var:focus {