[uber] Redoing the homepage selection UI

chrome/browser/resources/options2/browser_options.css

 /* TODO(csilv): Re-order, rename selectors according to style guide. */
 
 /* This is necessary because the fix for correctly wrapping labels
  * (crbug.com/109334) requires labels to be display: block; however, this label
  * has a button inline after it.
  */
 #home-page-label {
   display: inline;
 }
 
-#customHomePageGroup {
-  display: -webkit-box;
-  -webkit-box-orient: horizontal;
-}
-
 #homepageURL {
   margin-left: 10px;
 }
 
 #defaultSearchEngineGroup {
   display: -webkit-box;
   -webkit-box-orient: vertical;
 }
 
 #defaultSearchEngineGroup > div {
@@ skipping 101 matching lines @@
 
 html[dir=rtl] #pointer-sensitivity-more {
   float: left;
 }
 
 #pointer-value,
 #slider-control {
    display: inline-block;
    vertical-align: top;
 }