Bug 1365896 - Set -moz-appearance to none on in-content xul|checkbox and xul|radio, r=jaws

This patch should not result any visual differences. Rather, it makes
nsTextPaintStyle::InitCommonColors() think the checkboxes and radio
buttons are not themed and it should calculate contrast properly.

MozReview-Commit-ID: LF1bQQE1V9X

--HG--
extra : rebase_source : 38c04fa02c97779b60ca55697bc1ecbc37556d1b

toolkit/themes/shared/in-content/common.inc.css

@@ -517,6 +517,7 @@ html|a:hover:active,
 
 xul|checkbox {
   margin-inline-start: 0;
+  -moz-appearance: none;
 }
 
 xul|*.checkbox-check,
@@ -564,6 +565,7 @@ html|*.toggle-container-with-text {
 
 xul|radio {
   margin-inline-start: 0;
+  -moz-appearance: none;
 }
 
 xul|*.radio-check {