cc: Resize picture layer tiling set during commit

cc: Resize picture layer tiling set during commit

Previously, we would only set the tiling set bounds post-calcDraw, which
means that invalidations that came in during the commit would get dropped
because they were outside the content bounds of each tiling.  Fix this by
explicitly updating bounds during the commit prior to invalidation.

This fixes offscreen garbage caused by layer resizing when viewing a
directory with impl-side painting.

The didUpdateBounds function is in line with the direction of the patch
here: https://codereview.chromium.org/11503005/ and can just be made
virtual in the future.

R=nduca@chromium.org
BUG=165246
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=172372

[enne (OOO), 2012-12-11 01:38:47]

There's still some additional wonkiness going on with invalidation and this
doesn't fix all the issues, but this change is clearly needed.

[nduca, 2012-12-11 02:52:54]

lgtm

[commit-bot: I haz the power, 2012-12-11 17:35:45]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/enne@chromium.org/11516022/1

[commit-bot: I haz the power, 2012-12-11 19:29:33]

Change committed as 172372