Remove GetBitmapForSharedMemory from cc::SharedBitmapManager

Remove GetBitmapForSharedMemory from cc::SharedBitmapManager

This is only used in specific circumstances in the renderer, so move it to ChildSharedBitmapManager.

Committed: https://crrev.com/27e8203c9de55da9f9451a270082de0ca2ca1d01
Cr-Commit-Position: refs/heads/master@{#308014}

[jbauman, 2014-12-11 02:24:07]

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

[danakj, 2014-12-11 18:00:24]

danakj@chromium.org changed reviewers:
+ danakj@chromium.org

[danakj, 2014-12-11 18:00:25]

LGTM

[piman, 2014-12-11 18:16:47]

lgtm

[jbauman, 2014-12-11 22:02:45]

The CQ bit was checked by jbauman@chromium.org

[commit-bot: I haz the power, 2014-12-11 23:08:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/795843002/1

[commit-bot: I haz the power, 2014-12-12 00:59:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-12 01:00:38]

Patchset 1 (id:??) landed as
https://crrev.com/27e8203c9de55da9f9451a270082de0ca2ca1d01
Cr-Commit-Position: refs/heads/master@{#308014}