Since it may not be obvious, the best way to get stable chromium-browser is to use the distro's default APT source, which should include the security feed. The only way a PPA will have something newer than that for more than a few days is if the PPA has a version that is broken.
Since it may not be obvious, the best way to get stable chromium-browser is to use the distro's default APT source, which should include the security feed. The only way a PPA will have something newer than that for more than a few days is if the PPA has a version that is broken.