MD Settings: clean up text controls (links, buttons)

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">
       /* Included here so we don't have to include "iron-positioning" in every
        * stylesheet. See crbug.com/498405. */
       [hidden] {
@@ skipping 60 matching lines @@
       }
 
       iron-dropdown .dropdown-content .dropdown-item[disabled] {
         opacity: var(--settings-disabled-opacity);
       }
 
       span ~ a {
         -webkit-margin-start: 4px;
       }
 
-      [is='action-link'],
-      [is='action-link']:active,
-      [is='action-link']:hover,
-      [is='action-link']:visited,
       .primary-button,
       .tertiary-button,
       a[href] {
         color: var(--google-blue-700);
       }
 
       .primary-button,
       .tertiary-button {
         --paper-button-flat-keyboard-focus: {
           background: rgba(51, 103, 214, .12);  /* --google-blue-700 */
         };
       }
 
-      a[href],
-      [is='action-link']:hover {
+      a[href] {
         text-decoration: none;
       }
 
       /* There are three main button styles, .primary-button, .secondary-button,
        * and .tertiary-button. The primary is the action button (e.g. "edit",
        * "delete") while the secondary is often a "Cancel" button. A tertiary
        * button may be used to get more information or similar, that we expect
        * most users will not need. */
       .primary-button {
         --paper-button: {
@@ skipping 104 matching lines @@
 
       .list-item > label span[disabled] {
         opacity: var(--settings-disabled-opacity);
       }
 
       .list-item > paper-icon-item {
         padding: 0;
       }
 
       /* This button has no ink ripple. */
-      .list-item.list-button {
-        @apply(--settings-actionable);
+      .list-button[is='action-link'] {

[Dan Beam, 2017/01/24 05:25:33]

why can't this be .list-item [is='action-link']?

[scottchen, 2017/01/24 19:39:12]

I'm thinking there could be cases in which action-link inside .list-item is not
intended to be a full-row button.

e.g. :

<div class="list-button> 
   Hello 
  <a is="action-link">Manage Something</a>
</div>

+        min-height: inherit;
+        display: flex;
         align-items: center;
-        color: var(--google-blue-500);
+        flex: 1;
         font-weight: 500;
       }
 
       /* 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);
       }
 
       /* A settings-box is a horizontal row of text or controls within a
@@ skipping 138 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>