Update webkitgtk to 2.14.0 in yakkety

[Jeremy Bícha]

Recently, Ubuntu released a security update for Ubuntu 16.04 LTS upgrading webkit2gtk (WK2) from 2.10.9 to 2.12.5. WK2 roughly follows the GNOME release cycle and released 2.14.0 this week. Based on previous updates, we can expect a security advisory for this update to be published soon.

Therefore, I'd like to go ahead and sync webkit2gtk 2.14.0-1 from Debian to yakkety now. Because it's a security-related update where the security improvements can't be easily split out, I don't believe it needs a Feature Freeze exception.

Testing I've done:
- I've been running 2.13 development releases for a few weeks.
- The package has built successfully on Debian on all architectures Ubuntu cares about:
https://buildd.debian.org/status/package.php?p=webkit2gtk
- 2.14.0 has been pushed to the GNOME3 Staging PPA for yakkety (which also includes GTK 3.22)
- I built 2.14 in my yakkety PPA for all normal PPA architectures (this PPA does not use GTK 3.22 or have other odd dependency changes)
https://launchpad.net/~jbicha/+archive/ubuntu/arch/+packages
- I tested Tuesday's daily Ubuntu (Unity) iso with the updated WK2 packages and ensured the slideshow works fine (because 2.12.4 had a regression there, see bug 1618956 )
- There are three GNOME apps that use WK2's unstable DOM API: epiphany-browser, evolution and yelp. The unstable API is scheduled to be removed early in the 2.16 cycle so this soon won't be an issue.

Without rebuilding, yakkety's epiphany, evolution and yelp work fine. I intend to package Evolution 3.22 (yakkety currently has 3.21.91) once wk2 is in yakkety. The evolution package currently has a patch to revert the switch to the 2.14 API and it would be nice to be able to drop this patch instead of having to update it again.

I'd like to update Epiphany to 3.22 too. I'm hoping it can fall under the standing UIFE/FF exception granted to other browsers like Chromium and Firefox.

References
==========
https://tracker.debian.org/pkg/webkit2gtk

https://tracker.debian.org/media/packages/w/webkit2gtk/changelog-2.14.0-1

https://webkitgtk.org/news.html

https://blogs.igalia.com/carlosgc/2016/09/20/webkitgtk-2-14/

https://blogs.gnome.org/mcatanzaro/2016/09/19/epiphany-3-22-and-a-couple-new-stable-releases-too/

https://git.gnome.org/browse/epiphany/tree/NEWS?h=gnome-3-22

http://www.ubuntu.com/usn/usn-3079-1/

[Jeremy Bícha (jbicha)]

This was discussed at https://irclogs.ubuntu.com/2016/09/21/%23ubuntu-desktop.html#t12:52

[Jeremy Bícha (jbicha)]

https://launchpad.net/ubuntu/+source/webkit2gtk/2.14.0-1

[Iain Lane (laney)]

Please document dropped bits of diff if they're non obvious and the package needs to be reviewed

(accepted ephy this time)

[Jeremy Bícha (jbicha)]

Thanks for the note. We do still need epiphany's ubuntu_search.patch so I'll do another upload to restore it.

[Launchpad Janitor (janitor)]

This bug was fixed in the package epiphany-browser - 3.22.0-1ubuntu2

---------------
epiphany-browser (3.22.0-1ubuntu2) yakkety; urgency=medium

  * Restore ubuntu_search.patch accidentally dropped in last upload.
    Thanks Laney for noticing!
    - Use Ubuntu parameters for default search providers

 -- Jeremy Bicha <email address hidden> Thu, 29 Sep 2016 14:23:48 -0400