Unrecognized manifest key 'applications'. warning for Google Chrome : <p>I have created my Web Extension for Firefox which uses Chrome Extension API.</p>

<p>But Firefox requires <code>application</code> key in <code>manifest.json</code></p>

<p><a href="https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json" rel="noreferrer">https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json</a></p>

<p>If I load the same extension for Google Chrome, Chrome warns as:</p>

<pre><code>There were warnings when trying to install this extension:
Unrecognized manifest key 'applications'.
</code></pre>

<p>Although the extension works, I am not sure if I can send a Firefox Web Extension  to Google Chrome Store with this manifest file.</p>

<p>I can create another project for Google Chrome but I want to keep a single folder that may work for both Firefox and Google Chrome without any warnings.</p>

<p>How I am suppose to fix this warning while keeping Firefox requirements?</p>
