当您使用Firefox for Android时，您会定期查看横幅促进同步，主题等的应用程序功能。
When you use Firefox for Android, you periodically see banners promoting the app features such as sync, themes, etc.
Is there a way one can disable this and get rid of the distraction from surfing?
about:config in the address bar.
After you open it, search for the browser.snippets.enabled parameter, tap on it, then tap on the Toggle button.
This disables the banners from appearing in the bottom.
Source: Annoying Firefox for Android Banners - SOLVED.
Deleting Firefox fixed it for me!
Deleted Firefox from my comp too, just to be sure no popups start there.
No ads from Chrome so far...