Fixed browser options page

Before/Now comparison: http://imgur.com/a/4Nivx

BUG=467790

Review URL: https://codereview.chromium.org/1037483005

Cr-Commit-Position: refs/heads/master@{#322186}

chrome/browser/resources/options/browser_options.html

@@ -470,7 +470,7 @@
                 pref="rappor.enabled"></span>
           </span>
         </label>
-      <div>
+      </div>
 </if>  <!-- _google_chrome -->
       <div class="checkbox">
         <label>