Update mojo sdk to rev c02a28868825edfa57ab77947b8cb15e741c5598

Update mojo sdk to rev c02a28868825edfa57ab77947b8cb15e741c5598

Re-land. Previously conflicted with another CL that landed
just before the roll.

BUG=None
TBR=jam@chromium.org,ben@chromium.org
TBR=mfoltz@chromium.org
TBR=mek@chromium.org
TBR=xhwang@chromium.org
TBR=shess@chromium.org

Committed: https://crrev.com/0bfe154baad9ddfb1f0c6ecc7cace36e8f430e75
Cr-Commit-Position: refs/heads/master@{#344994}

[Ken Rockot(use gerrit already), 2015-08-22 23:35:33]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2015-08-22 23:35:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310103002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310103002/1

[commit-bot: I haz the power, 2015-08-22 23:41:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-22 23:41:48]

Patchset 1 (id:??) landed as
https://crrev.com/0bfe154baad9ddfb1f0c6ecc7cace36e8f430e75
Cr-Commit-Position: refs/heads/master@{#344994}

[Ken Rockot(use gerrit already), 2015-08-23 01:40:55]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1309103002/ by rockot@chromium.org.

The reason for reverting is: Looks like this breaks mojo_system_unittests on
Android...

http://build.chromium.org/p/chromium.linux/buildstatus?builder=Android%20GN&n...

.