MD Settings: change outlinks to actually use <a>

chrome/browser/resources/settings/appearance_page/appearance_page.html

 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/md_select_css.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button-light.html">
 <link rel="import" href="appearance_browser_proxy.html">
 <link rel="import" href="../controls/controlled_radio_button.html">
 <link rel="import" href="../controls/extension_controlled_indicator.html">
@@ skipping 43 matching lines @@
               aria-label="$i18n{setWallpaper}"
               aria-describedby="wallpaperSecondary"></button>
         </div>
         <div class="settings-box two-line"
             hidden="[[!pageVisibility.setTheme]]">
 </if>
 <if expr="not chromeos">
         <div class="settings-box two-line first"
             hidden="[[!pageVisibility.setTheme]]">
 </if>
-          <div class="start two-line" on-tap="onThemesTap_" actionable>
+          <a class="start two-line" actionable tabindex="-1" target="_blank"
+              href$="[[getThemeHref_(themeUrl_)]]">
             <div class="flex">
               $i18n{themes}
               <div class="secondary" id="themesSecondary">
                 [[themeSublabel_]]
               </div>
             </div>
             <button class="icon-external" is="paper-icon-button-light"
                 aria-label="$i18n{themes}"
                 aria-describedby="themesSecondary"></button>
-          </div>
+          </a>
 <if expr="not is_linux or chromeos">
           <template is="dom-if" if="[[prefs.extensions.theme.id.value]]">
             <div class="secondary-action">
               <paper-button id="useDefault" on-tap="onUseDefaultTap_"
                   class="secondary-button">
                 $i18n{resetToDefaultTheme}
               </paper-button>
             </div>
           </template>
 </if>
@@ skipping 110 matching lines @@
             associated-control="[[$$('#customize-fonts-subpage-trigger')]]"
             page-title="$i18n{customizeFonts}">
           <settings-appearance-fonts-page prefs="{{prefs}}">
           </settings-appearance-fonts-page>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="appearance_page.js"></script>
 </dom-module>