Call setNeedsLayout instead of invalidate when scheduling plugin webview animation.

Call setNeedsLayout instead of invalidate when scheduling plugin webview animation.

scheduleAnimation could be called for a variety of reasons, but we need to assume that layout and not just paint invalidation is needed, in order to avoid stale layout state during paint of the plugin's WebView.

BUG=436562
Committed: https://crrev.com/e47161e40995ae6edc1fe9277d81a0878a59bdd1
Cr-Commit-Position: refs/heads/master@{#331402}

[chrishtr, 2015-05-25 23:58:39]

chrishtr@chromium.org changed reviewers:
+ tommycli@chromium.org

[tommycli, 2015-05-26 17:03:51]

The CQ bit was checked by tommycli@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-05-26 17:05:00]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1158693002/20001

[commit-bot: I haz the power, 2015-05-26 17:51:42]

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

[commit-bot: I haz the power, 2015-05-26 17:51:43]

Dry run: This issue passed the CQ dry run.

[tommycli, 2015-05-26 18:15:18]

lgtm

[chrishtr, 2015-05-26 18:34:00]

The CQ bit was checked by chrishtr@chromium.org

[commit-bot: I haz the power, 2015-05-26 18:36:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1158693002/20001

[commit-bot: I haz the power, 2015-05-26 19:21:40]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-26 19:22:38]

Patchset 2 (id:??) landed as
https://crrev.com/e47161e40995ae6edc1fe9277d81a0878a59bdd1
Cr-Commit-Position: refs/heads/master@{#331402}