Google added to Chromium 43.x a new add-on called "Chrome Hotword Shared Module" without source code. At first run, it is automatically downloaded and installed without any prompt. After this installation [it] is only available at chrome://voicesearch/ and is not shown in the extensions menu and by default the user is not able to disable or uninstall it. This add-on can record audio any time since is linked to the Ok Google feature ( https://support.google.com/websearch/answer/2940021?hl=en [support.google.com] ).
Sources: https://code.google.com/p/chromium/issues/detail?id=500922 and http://www.ghacks.net/2015/06/19/googles-in-hot-water-after-dropping-binary-code-in-chromium-for-linux/
(Score: 2) by janrinok on Saturday June 20 2015, @01:49PM
I think it matches the title of both of the sources referred to at the bottom of TFA. The previous link is for those who do not know what Google OK is.