Update snappy URL.

Update snappy URL.

The current link leads to an old page with a manual redirect. This
updates the URL to the new site for this project.

BUG=chromium:476190
Committed: https://crrev.com/0cd4698d5a49b556b859909210287b5019e84542
Cr-Commit-Position: refs/heads/master@{#353127}

[bungeman-chromium, 2015-10-08 19:38:22]

The CQ bit was checked by bungeman@chromium.org to run a CQ dry run

[bungeman-chromium, 2015-10-08 19:40:05]

bungeman@chromium.org changed reviewers:
+ jsbell@chromium.org

[commit-bot: I haz the power, 2015-10-08 19:40:33]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1400623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1400623002/1

[jsbell, 2015-10-08 19:48:48]

lgtm

cc: cmumford (also, I note that https://github.com/google/snappy still says
code.google.com all over it)

[bungeman-chromium, 2015-10-08 19:50:22]

The CQ bit was unchecked by bungeman@chromium.org

[bungeman-chromium, 2015-10-08 19:50:30]

The CQ bit was checked by bungeman@chromium.org

[commit-bot: I haz the power, 2015-10-08 19:50:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-08 19:50:48]

Dry run: This issue passed the CQ dry run.

[bungeman-chromium, 2015-10-08 19:59:08]

The CQ bit was checked by bungeman@chromium.org

[commit-bot: I haz the power, 2015-10-08 20:00:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1400623002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1400623002/1

[commit-bot: I haz the power, 2015-10-08 20:23:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-08 20:23:49]

Patchset 1 (id:??) landed as
https://crrev.com/0cd4698d5a49b556b859909210287b5019e84542
Cr-Commit-Position: refs/heads/master@{#353127}