Allow retrieval of updated bitmaps in thumbnails.

Allow retrieval of updated bitmaps in thumbnails.

When the thumbnails are updated using setBitmap
and setCompressedBitmap, getbitmap should return
newly updated bitmap instead of the placeholder.

BUG=410658
Committed: https://crrev.com/a1a303aace01064cfeb3eff36c3f7b9a02c75a51
Cr-Commit-Position: refs/heads/master@{#329672}

[sivag, 2015-05-13 16:38:44]

siva.gunturi@samsung.com changed reviewers:
+ dtrainor@chromium.org, sievers@chromium.org

[sivag, 2015-05-13 16:38:44]

ptal..

[David Trainor- moved to gerrit, 2015-05-13 17:03:37]

lgtm

[sivag, 2015-05-13 17:17:06]

The CQ bit was checked by siva.gunturi@samsung.com

[commit-bot: I haz the power, 2015-05-13 17:18:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1128113010/1

[commit-bot: I haz the power, 2015-05-13 17:50:33]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-13 17:52:02]

Patchset 1 (id:??) landed as
https://crrev.com/a1a303aace01064cfeb3eff36c3f7b9a02c75a51
Cr-Commit-Position: refs/heads/master@{#329672}