Chrome currently doesn't ignore transitions when using "@media print"

Chrome currently doesn't ignore transitions when using "@media print"
styles. FF does ignore transitions. This also includes a Layout Test.

BUG=412281
Committed: https://crrev.com/39a296120585ce464ccffaeb8ed2067ee1ba56d9
Cr-Commit-Position: refs/heads/master@{#351742}

[nainar, 2015-09-29 06:02:26]

nainar@chromium.org changed reviewers:
+ dstockwell@chromium.org, timloh@chromium.org

[nainar, 2015-09-29 06:02:26]

PTAL?

Thanks!

[Timothy Loh, 2015-09-29 06:14:38]

On 2015/09/29 06:02:26, nainar wrote:
> PTAL?
> 
> Thanks!

This doesn't fully fix the issue. Doug's comment about was-printing on the bug
is because of the following:

- User clicks print preview
- Printing flag on
- Style recalc, layout, etc.
-- Previous ComputedStyle has values from the current (non-print) styles
-- Ignore transitions due to code change here
- Printing flag off
- Style recalc, layout, etc.
-- Previous ComputedStyle has values from the print styles
-- Start a transition from print styles to non-print styles??

[nainar, 2015-09-30 01:49:18]

Working on Layout Test, could you take a look at the patch in the meanwhile?

[nainar, 2015-10-01 03:30:36]

Hi!

I've uploaded both the working patch and the Layout Test, PTAL?

Thanks!

[dstockwell, 2015-10-01 03:41:55]

lgtm

[nainar, 2015-10-01 03:46:46]

The CQ bit was checked by nainar@chromium.org

[nainar, 2015-10-01 03:46:46]

The patchset sent to the CQ was uploaded after l-g-t-m from
dstockwell@chromium.org
Link to the patchset: https://codereview.chromium.org/1375833003/#ps100001
(title: "Space issues")

[commit-bot: I haz the power, 2015-10-01 03:47:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1375833003/100001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1375833003/100001

[commit-bot: I haz the power, 2015-10-01 07:04:01]

Committed patchset #6 (id:100001)

[commit-bot: I haz the power, 2015-10-01 07:04:51]

Patchset 6 (id:??) landed as
https://crrev.com/39a296120585ce464ccffaeb8ed2067ee1ba56d9
Cr-Commit-Position: refs/heads/master@{#351742}