MD Settings: Align rows underneath settings-checkboxes with the settings-checkbox labels

chrome/browser/resources/settings/settings_shared_css.html

 /* Copyright 2016 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
 /**
  * @fileoverview
  * Common styles for Material Design settings.
  */
 
 <dom-module id="settings-shared">
   <template>
     <style>
       :root {
+        --checkbox-margin-start: 2px;
+        --checkbox-size: 16px;
+        --checkbox-spacing: 18px;
         --settings-secondary: {
           color: var(--paper-grey-500);
           font-weight: 400;
         }
       }
 
       h2 {
         @apply(--layout-center);
         color: var(--paper-grey-500);
         display: flex;
@@ skipping 96 matching lines @@
 
       .list-frame {
         @apply(--layout-center);
         -webkit-padding-end: 20px;
         -webkit-padding-start: 48px;
         display: block;
         padding-bottom: 0;
         padding-top: 0;
       }
 
-      .list-frame select {
-        -webkit-margin-start: 4px;
-      }
-
-      .list-frame .secondary {
+      .list-frame .secondary,
+      .list-item .secondary {
         @apply(--settings-secondary);
       }
 
       .list-item {
         @apply(--layout-center);
         display: flex;
         min-height: 40px;
         padding: 0;
       }
 
-      /* This button has no ink ripple */
-      .list-item.list-button {
-        @apply(--layout-center);
-        color: var(--google-blue-500);
-        font-weight: 500;
-      }
-
       .list-item iron-icon {
         @apply(--layout-center);
         height: 20px;
         width: 20px;
       }
 
+      .list-item select {
+        -webkit-margin-start: 4px;
+      }
+
       .list-item > .middle {
         flex: 1;
         margin: 8px 12px;
         overflow: hidden;
         white-space: nowrap;
       }
 
       .list-item > .start {
         flex: 1;
         overflow: hidden;
@@ skipping 72 matching lines @@
         padding: 8px;
       }
 
       .vertical-list > div:first-of-type {
         border-top: none;
       }
 
       .vertical-list > div {
         border-top: 1px solid var(--paper-grey-300);
       }
+
+      .settings-checkbox-spacer {
+        -webkit-margin-start: calc(

[michaelpg, 2016/03/02 21:53:06]

This, um, apparently works, both in native CSS in Chrome and in Polymer's
polyfill.

[Dan Beam, 2016/03/02 22:04:32]

yeah, i did something like this in downloads (but not sure i committed it)

kinda magical

+            var(--checkbox-margin-start) +
+            var(--checkbox-size) +
+            var(--checkbox-spacing));
+      }
     </style>
   </template>
 </dom-module>