Fix in-process share group

Fix in-process share group

GLShareGroup should be the same whenever MailboxManager is the same.
So store the GLShareGroup instance in the in-process service.

BUG=443464
Committed: https://crrev.com/0ea51acebe39d13d5282899de7f5ba9ba165f187
Cr-Commit-Position: refs/heads/master@{#312954}

[boliu, 2015-01-22 21:38:59]

boliu@chromium.org changed reviewers:
+ sievers@chromium.org

[boliu, 2015-01-22 21:38:59]

Another one for ya, although pending testing on all devices.

[boliu, 2015-01-23 00:02:14]

On 2015/01/22 21:38:59, boliu wrote:
> Another one for ya, although pending testing on all devices.

Doesn't appear to regress anything, which is good.

[no sievers, 2015-01-23 21:33:01]

lgtm

[boliu, 2015-01-23 21:41:58]

The CQ bit was checked by boliu@chromium.org

[commit-bot: I haz the power, 2015-01-23 21:42:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/870693003/1

[commit-bot: I haz the power, 2015-01-23 22:51:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-23 22:53:31]

Patchset 1 (id:??) landed as
https://crrev.com/0ea51acebe39d13d5282899de7f5ba9ba165f187
Cr-Commit-Position: refs/heads/master@{#312954}