MD Settings: change outlinks to actually use <a>

chrome/browser/resources/settings/privacy_page/privacy_page.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_vars_css.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.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="../clear_browsing_data_dialog/clear_browsing_data_dialog.html">
@@ skipping 360 matching lines @@
       </template>
       <template is="dom-if" route-path="/content/flash" no-search>
         <settings-subpage page-title="$i18n{siteSettingsFlash}">
           <category-default-setting category="{{ContentSettingsTypes.PLUGINS}}"
               toggle-off-label="$i18n{siteSettingsFlashBlock}"
               toggle-on-label="$i18n{siteSettingsFlashAllow}"
               sub-option-label="$i18n{siteSettingsFlashAskBefore}"
               sub-option-secondary="$i18n{siteSettingsFlashAskBeforeSubtitle}">
           </category-default-setting>
 <if expr="chromeos">
-          <div actionable class="settings-box"
-              on-tap="onAdobeFlashStorageClicked_">
+          <a actionable class="settings-box" tabindex="-1" target="_blank"
+              href="https://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html">

[scottchen, 2017/04/18 19:12:49]

not sure what to do about 80-col here.

             <div class="start">$i18n{adobeFlashStorage}</div>
             <button class="icon-external" is="paper-icon-button-light"
                 aria-label="$i18n{adobeFlashStorage}"></button>
-          </div>
+          </a>
 </if>
           <category-setting-exceptions
               category="{{ContentSettingsTypes.PLUGINS}}">
           </category-setting-exceptions>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/content/popups" no-search>
         <settings-subpage page-title="$i18n{siteSettingsCategoryPopups}">
           <category-default-setting category="{{ContentSettingsTypes.POPUPS}}"
               toggle-off-label="$i18n{siteSettingsBlockedRecommended}"
@@ skipping 93 matching lines @@
                 category="{{ContentSettingsTypes.PROTECTED_CONTENT}}">
             </category-setting-exceptions>
           </template>
 </if>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="privacy_page.js"></script>
 </dom-module>