title: Unescaped '#' characters in a data URI body deprecated; How to find in project?
body: <p>I'm getting this warning from Chrome in my Angular 2+ application. Ok, so how am I supposed to go about finding where this issue is occurring in my project with so many data URIs? Wait for it to fail, I suppose? Yikes.</p>
  
  <blockquote>
    <p>[Deprecation] Using unescaped '#' characters in a data URI body is
    deprecated and will be removed in M67, around May 2018. Please use
    '%23' instead. See
    <a href="https://www.chromestatus.com/features/5656049583390720" rel="noreferrer">https://www.chromestatus.com/features/5656049583390720</a> for more
    details.</p>
  </blockquote>
  
  <p>Seems like they should point to the source somehow. Any ideas?</p>