[MD settings] change spacing between controlledBy icon and control

chrome/browser/resources/settings/settings_vars_css.html

 <link rel="import" href="chrome://resources/cr_elements/shared_vars_css.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/color.html">
 
 <!-- Common css variables for Material Design settings. -->
 <style is="custom-style">
   /* We keep our vars in sort order, though some vars must be defined prior to
    * others. The --settings-* vars are defined explicitly prior to the --paper-*
    * and --iron-* vars.
    */
   :root {
     /* Some colors use non-MD colors.  These custom colors are specified by
      * UX design (bettes@). */
 
     --settings-actionable: var(--cr-actionable);
+    --settings-button-padding: 12px;
 
     --settings-box-row-padding: 20px;
     --settings-box-row-indent: calc(
         var(--settings-box-row-padding) + var(--settings-indent-width));
     --settings-indent-width: 40px;
     --settings-card-max-width: 680px;
     --settings-disabled-opacity: .65;
     --settings-error-color: var(--paper-red-700);
 
     --settings-list-frame-padding: {
@@ skipping 56 matching lines @@
 
     --checkbox-margin-start: 2px;
     --checkbox-size: 16px;
     --settings-control-spacing: var(--cr-control-spacing);
     --iron-icon-fill-color: var(--paper-grey-600);
     --iron-icon-height: var(--cr-icon-size);
     --iron-icon-width: var(--cr-icon-size);
     --paper-checkbox-label-color: inherit;
     --paper-dialog-color: inherit;
 
-    --cr-icon-ripple-size: 40px;
     --paper-icon-button: {
       /**
-       * This makes the icons 20px (in combination with "--cr-icon-ripple-size:
-       * 40px"), since paper-icon-button>iron-icon width and height are
-       * hardcoded to 100%.
+       * This makes the icons 20px (in combination with --cr-icon-ripple-size),
+       * since paper-icon-button>iron-icon width and height are hardcoded to
+       *  100%.
        */
-      padding: 10px;
+      padding: var(--cr-icon-ripple-padding);
     };
     --paper-input-container-focus-color: var(--google-blue-500);
     --paper-input-container-input: {
       color: inherit;
       font-size: inherit;
       font-weight: inherit;
       line-height: 154%;
       vertical-align: baseline;
     };
     --paper-input-container-label: {
@@ skipping 28 matching lines @@
     --paper-toggle-button-unchecked-button: var(--settings-toggle-button-size);
     --paper-toggle-button-unchecked-ink: var(--settings-toggle-ink-size);
 
     --settings-input-underline: {
       border-color: var(--paper-grey-300);
     };
 
     --paper-input-container-underline: var(--settings-input-underline);
   }
 </style>