title: youtube v3 api search fails in Chrome but works in Firefox
body: <p>Our app Accessible-Youtube has been working fine for many years. Now it only works in Firefox. The current failure point in Chrome is when searching for a video. The code looks like:</p>
  <pre><code>$.ajax(
        &quot;https://www.googleapis.com/youtube/v3/search?part=snippet&amp;q=&quot; +
          q +
          &quot;&amp;type=video&amp;videoEmbeddable=true&amp;key=OURKEYISHERE&quot;,
        {
          type: &quot;GET&quot;,
          cache: false,
          success: function (data, status, jqxhr) {
            build(data);
          },
          error: function (data, status, jqxhr) {
            alert(&quot;An unknown error occured! Are you connected to the internet?&quot;);
          },
        }
      );
  </code></pre>
  <p>In Firefox this works fine. In Chrome we get a 403 response with the message</p>
  <pre><code>{
    &quot;error&quot;: {
      &quot;code&quot;: 403,
      &quot;message&quot;: &quot;Requests from referer https://www.cs.unc.edu/ are blocked.&quot;,
      &quot;errors&quot;: [
        {
          &quot;message&quot;: &quot;Requests from referer https://www.cs.unc.edu/ are blocked.&quot;,
          &quot;domain&quot;: &quot;global&quot;,
          &quot;reason&quot;: &quot;forbidden&quot;
        }
      ],
      &quot;status&quot;: &quot;PERMISSION_DENIED&quot;
    }
  }
  </code></pre>
  <p>I suspect this must be something about recent changes to the way Chrome handles cookies and/or cross-origin requests.</p>