Translate a string in autofill settings.

chrome/browser/resources/options/autofill_options.html

 <div id="autofill-options" class="page" hidden>
   <div class="close-button"></div>
   <h1 i18n-content="autofillOptionsPage"></h1>
   <div class="content-area">
+    <!-- TODO(estade): This checkbox shouldn't show if you're not signed into
+         sync. Or perhaps it should show with a link to go sign in with sync?
+      -->
     <div id="autofill-wallet-setting-area" class="checkbox">
       <label>
         <input pref="autofill.wallet_import_enabled" type="checkbox">
-        <span>
-          Suggest addresses and credit cards from Google Wallet
-          <!-- A reminder not to launch this UI. -->
-          <span style="font-size: 80%">translate me!</span>
-        </span>
+        <span i18n-content="autofillWalletOption"></span>
     </div>
 <if expr="is_macosx">
     <div class="checkbox">
       <label>
         <input pref="autofill.use_mac_address_book" type="checkbox"
              id="autofill-use-mac-address-book-checkbox"
              metric="Options_AutofillAuxiliaryProfiles">
         <span i18n-content="auxiliaryProfilesEnabled"></span>
       </label>
     </div>
 </if>
-    <!-- TODO(estade): This section shouldn't show if you're not signed into
-         sync. Or perhaps it should show with a link to go sign in with sync?
-      -->
     <h3 i18n-content="autofillAddresses"></h3>
     <div class="settings-list">
       <list id="address-list"></list>
       <div>
         <button id="autofill-add-address" i18n-content="autofillAddAddress">
         </button>
       </div>
     </div>
 
     <h3 i18n-content="autofillCreditCards"></h3>
@@ skipping 10 matching lines @@
     <a id="autofill-help" target="_blank" i18n-values="href:helpUrl"
         i18n-content="helpButton">
     </a>
     <div class="spacer-div"></div>
     <div class="button-strip">
       <button id="autofill-options-confirm" class="default-button"
           i18n-content="done"></button>
     </div>
   </div>
 </div>