WebUI: Only highlight scrollable divs

ui/webui/resources/cr_elements/shared_style_css.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/shared_vars_css.html">
 <link rel="import" href="hidden_style_css.html">
 
 <!-- Common styles for Material Design WebUI. Included directly in
   settings_shared_css.html. -->
 <dom-module id="cr-shared-style">
   <template>
     <style include="cr-hidden-style">
       /* Chrome spinners should be blue. */
@@ skipping 79 matching lines @@
         border-style: solid;
         border-width: 1px 0;
         overflow-y: auto;
       }
       [scrollable].is-scrolled {
         border-top-color: var(--google-grey-300);
       }
       [scrollable].can-scroll:not(.scrolled-to-bottom) {
         border-bottom-color: var(--google-grey-300);
       }
-      [scrollable] :focus {
-        @apply(--cr-list-item-focus);
-        @apply(--cr-selectable-focus);
-      }
       [scrollable] iron-list > * {
         @apply(--cr-actionable);
       }
+      [scrollable] iron-list > :not(.no-outline):focus {
+        @apply(--cr-list-item-focus);
+        @apply(--cr-selectable-focus);
+      }
 
       .scroll-container {
         display: flex;
         flex-direction: column;
         min-height: 1px;
       }
 
       [selectable]:focus,
       [selectable] > :focus {
         @apply(--cr-selectable-focus);
       }
       [selectable] > * {
         @apply(--cr-actionable);
       }
     </style>
   </template>
 </dom-module>