/usr/share/accounts/applications/unity-lens-photos.application is in unity-lens-photos 1.0+17.10.20170605-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | <?xml version="1.0" encoding="UTF-8"?>
<application id="unity-lens-photos">
  <description>Photos search plugin</description>
	<translations>unity-lens-photos</translations>
	<desktop-entry>unity-lens-photos.desktop</desktop-entry>
  <services>
		<service id="flickr-sharing">
			<description>Search your and your friends' Flickr photos</description>
		</service>
		<service id="facebook-sharing">
			<description>Search your and your friends' Facebook photos</description>
		</service>
		<service id="picasa">
			<description>Search your Picasa photos</description>
		</service>
  </services>
</application>
 |