Make TestPlugin allocate its bitmap with SharedBitmapManager

Make TestPlugin allocate its bitmap with SharedBitmapManager

This paves the way for having TextureMailbox use SharedBitmaps instead of SharedMemory.

Committed: https://crrev.com/2f5c1940866d185dab0ef9585d0dbcb7eb7eb618
Cr-Commit-Position: refs/heads/master@{#307150}

[jbauman, 2014-12-05 01:32:44]

jbauman@chromium.org changed reviewers:
+ pfeldman@chromium.org

[pfeldman, 2014-12-05 10:56:27]

You probably want someone more familiar with the code to take a look.

[jbauman, 2014-12-06 00:24:24]

jbauman@chromium.org changed reviewers:
+ piman@chromium.org
- pfeldman@chromium.org

[piman, 2014-12-06 02:12:17]

lgtm

[jbauman, 2014-12-06 02:28:14]

The CQ bit was checked by jbauman@chromium.org

[commit-bot: I haz the power, 2014-12-06 02:28:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/783573003/1

[commit-bot: I haz the power, 2014-12-06 03:28:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-06 03:29:15]

Patchset 1 (id:??) landed as
https://crrev.com/2f5c1940866d185dab0ef9585d0dbcb7eb7eb618
Cr-Commit-Position: refs/heads/master@{#307150}