[MD settings] remove unwanted separator line

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">
+      :host-context([dir=rtl]) button[is='paper-icon-button-light'] {
+        transform: scaleX(-1);  /* Flip on the X axis (aka mirror). */
+      }

[dschuyler, 2017/05/23 01:24:55]

Moved here from settings_shared_css.html

+
       /* Chrome spinners should be blue. */
       paper-spinner {
         --paper-spinner-layer-1-color: var(--google-blue-500);
         --paper-spinner-layer-2-color: var(--google-blue-500);
         --paper-spinner-layer-3-color: var(--google-blue-500);
         --paper-spinner-layer-4-color: var(--google-blue-500);
       }
 
       .action-button {
         background: var(--google-blue-500);
@@ skipping 94 matching lines @@
       [selectable]:focus,
       [selectable] > :focus {
         @apply(--cr-selectable-focus);
       }
       [selectable] > * {
         @apply(--cr-actionable);
       }
     </style>
   </template>
 </dom-module>