Backed out changeset dfcb7c8ab0d6 (bug 1205100) for OS X crashes

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

@@ -181,7 +181,7 @@ html|button {
 xul|colorpicker[type="button"],
 xul|menulist {
   -moz-appearance: none;
-  min-height: 30px;
+  height: 30px;
   color: var(--in-content-text-color);
   border: 1px solid var(--in-content-box-border-color);
   -moz-border-top-colors: none !important;