[MD settings] flag to enable site settings All sites and Site details pages

chrome/browser/resources/settings/settings_shared_css.html

 <link rel="import" href="chrome://resources/cr_elements/shared_style_css.html">
 <link rel="import" href="/settings_vars_css.html">
 
 <!-- Common styles for Material Design settings. -->
 <dom-module id="settings-shared">
   <template>
     <style include="cr-shared-style">
       button[is='paper-icon-button-light'] {
         --paper-icon-button-light-ripple: {
           /* Center the ripple on the icon button. */
@@ skipping 289 matching lines @@
       .settings-box.block {
         display: block;
       }
 
       /* A row with two lines of text. Often the lower line will be .secondary.
        */
       .two-line {
         min-height: var(--settings-row-two-line-min-height);
       }
 
       /*

[Dan Beam, 2016/10/12 17:54:05]

don't follow this, follow every other comment in this file

[dschuyler, 2016/10/13 01:23:07]

Done.

        * A single start-aligned column, generally but not necessarily used in
        * combination with two-line.
        */
       .single-column {
         align-items: flex-start;
         flex-direction: column;
         justify-content: center;
       }
 
+      /*
+       * A settings-box with no height other than the seprator line.
+       */
+      .settings-box.line-only {
+        min-height: 0;
+      }
+
       /* The lower line of text in a two-line row. */
       .secondary {
         @apply(--settings-secondary);
       }
 
       /* The middle part (horizontally) of a row. */
       .settings-box .middle {
         -webkit-padding-start: 16px;
         align-items: center;
         flex: auto;
@@ skipping 89 matching lines @@
       /* Turns the arrow direction downwards, when the bubble is placed above
        * the anchor element */
       .search-bubble-innards.above::after {
         -webkit-transform: rotate(-135deg);
         bottom: -5px;
         top: auto;
       }
     </style>
   </template>
 </dom-module>