MD Settings: fix presentation of sync page

When moving from checkboxes -> toggles, I unwrapped the label text of
UIs using

  <paper-checkbox hidden=[[...]]>...</paper-checkbox>

to

  <div>...</div>
  <paper-toggle-button hidden=[[...]]></paper-toggle-button>

I forgot to move the hidden=[[]] bindings, and only the toggle would get
hidden on platforms that don't support the data type.

R=tommycli@chromium.org
BUG=none
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2624203003
Cr-Commit-Position: refs/heads/master@{#443070}
1 file changed