MD Settings: change outlinks to actually use <a>

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

Index: chrome/browser/resources/settings/privacy_page/privacy_page.html
diff --git a/chrome/browser/resources/settings/privacy_page/privacy_page.html b/chrome/browser/resources/settings/privacy_page/privacy_page.html
index b6e0dce6d89ef177ea554cb72e858f0a34ddb471..4c89ab133f9405a767f525c2d9beba397e0105d2 100644
--- a/chrome/browser/resources/settings/privacy_page/privacy_page.html
+++ b/chrome/browser/resources/settings/privacy_page/privacy_page.html
@@ -378,12 +378,12 @@
               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}}">