MD History: Fix appearance of 'Other forms of browsing history' link

chrome/browser/resources/md_history/side_bar.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/app-layout/app-drawer/app-drawer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-selector/iron-selector.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/color.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/typography.html">
 <link rel="import" href="chrome://history/browser_service.html">
 <link rel="import" href="chrome://history/shared_style.html">
 
 <dom-module id="history-side-bar">
@@ skipping 30 matching lines @@
       #clear-browsing-data {
         text-transform: uppercase;
       }
 
       iron-selector {
         -webkit-user-select: none;
         background-color: transparent;
         color: #5a5a5a;
       }
 
-      iron-selector a {
+      iron-selector > a {
         @apply(--paper-font-subhead);
         -webkit-padding-start: 24px;
         align-items: center;
         box-sizing: border-box;
         color: inherit;
         cursor: pointer;
         display: flex;
         font-size: 14px;
         font-weight: 500;
         min-height: 48px;
         outline: none;
         position: relative;
         text-decoration: none;
       }
 
-      iron-selector a:focus {
+      iron-selector > a:focus {
         outline: 0;
         position: relative;
       }
 
-      iron-selector a:focus::before {
+      iron-selector > a:focus::before {
         @apply(--layout-fit);
 
         background: currentColor;
         content: '';
         opacity: var(--dark-divider-opacity);
         pointer-events: none;
       }
 
-      iron-selector a.iron-selected {
+      iron-selector > a.iron-selected {
         color: var(--google-blue-500);
         font-weight: 500;
       }
 
       iron-selector {
         -webkit-user-select: none;
         color: #5a5a5a;
       }
 
       #footer {
@@ skipping 39 matching lines @@
         </a>
         <div id="footer" hidden="[[!showFooter]]">
           <div class="separator"></div>
           <div id="footer-text">$i18nRaw{sidebarFooter}</div>
         </div>
       </iron-selector>
     </app-drawer>
   </template>
   <script src="chrome://history/side_bar.js"></script>
 </dom-module>