DOMUI: Fix AF CC field some more.

chrome/browser/resources/options/options_page.css

 body {
   cursor: default;
   font-size: 100%;
 }
 
 a:link {
   color: rgb(63, 110, 194);
 }
 
 a:active {
@@ skipping 570 matching lines @@
   border: 1px solid #aaa;
   font-size: inherit;
   padding: 3px;
 }
 
 /* BUTTON */
 button,
 input[type='submit'] {
   -webkit-border-radius: 2px;
   -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1);
+  -webkit-user-select: none;
   background: -webkit-linear-gradient(#fafafa, #f4f4f4 40%, #e5e5e5);
   border: 1px solid #aaa;
   color: #444;
   font-size: inherit;
   margin-bottom: 0px;
   min-width: 4em;
   padding: 3px 12px 3px 12px;
 }
 
 button:hover,
@@ skipping 19 matching lines @@
   background: -webkit-linear-gradient(#fafafa, #f4f4f4 40%, #e5e5e5);
   border-color: #aaa;
   color: #888;
 }
 
 /* SELECT */
 select {
   -webkit-appearance: button;
   -webkit-border-radius: 2px;
   -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1);
+  -webkit-user-select: none;
   background-image: url("select.png"), -webkit-linear-gradient(#fafafa, #f4f4f4 40%, #e5e5e5);
   background-position: center right;
   background-repeat: no-repeat;
   border: 1px solid #aaa;
   color: #555;
   font-size: inherit;
   margin: 0;
   overflow: hidden;
   padding: 2px 20px 2px 5px;
   text-overflow: ellipsis;
@@ skipping 36 matching lines @@
 }
 
 html[os=mac] label > input[type=checkbox],
 html[os=mac] label > input[type=radio] {
   margin-top: 2px;
 }
 
 .suboption {
   -webkit-margin-start: 16px;
 }