Add initial extra info feature

Only the extra profile in profiles is shown, since it is the easiest to
implement.

Bug: twpowertools:93
Change-Id: Ife4f31ee056f74bd478702347d75044b024abf1e
diff --git a/src/static/options/experiments.html b/src/static/options/experiments.html
index 83a58cb..9a21fdf 100644
--- a/src/static/options/experiments.html
+++ b/src/static/options/experiments.html
@@ -14,6 +14,7 @@
       <form>
         <div id="optional-permissions-warning" hidden data-i18n="optionalpermissionswarning_header"></div>
         <div class="option"><input type="checkbox" id="workflows"> <label for="workflows" data-i18n="workflows"></label> <button id="manage-workflows" data-i18n="workflows_manage"></button></div>
+        <div class="option"><input type="checkbox" id="extrainfo"> <label for="extrainfo" data-i18n="extrainfo"></label></div>
         <div class="actions"><button id="save" data-i18n="save"></button></div>
       </form>
       <div id="save-indicator"></div>