Force software layer to redraw when it is resized.

Force software layer to redraw when it is resized.

Consider the following sequence of events:
1. The view is initialized with a size of 0x0
2. A frame comes in at a size of 50x50. Nothing is drawn.
3. The view is resized to 50x50.

We should re-draw the full frame at step 3, but we don't. This patch
makes it so that we do.

BUG=358450
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=261465

[ccameron, 2014-04-02 23:17:02]

Quick fix for one of the CA bugs found during the extra QA coverage.

[Ken Russell (switch to Gerrit), 2014-04-03 01:10:55]

lgtm

[ccameron, 2014-04-03 08:26:39]

Thanks!!

[ccameron, 2014-04-03 08:26:42]

The CQ bit was checked by ccameron@chromium.org

[commit-bot: I haz the power, 2014-04-03 08:27:26]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ccameron@chromium.org/217283006/1

[commit-bot: I haz the power, 2014-04-03 12:21:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-03 12:21:09]

Commit queue rejected this change because the description was changed
between the time the change entered the commit queue and the time it
was ready to commit. You can safely check the commit box again.

[ccameron, 2014-04-03 17:26:14]

The CQ bit was checked by ccameron@chromium.org

[commit-bot: I haz the power, 2014-04-03 17:27:02]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ccameron@chromium.org/217283006/1

[commit-bot: I haz the power, 2014-04-03 17:29:04]

Change committed as 261465