Don't try to paint graphics layers inside throttled frames

Don't try to paint graphics layers inside throttled frames

Previously painting was skipped for PaintLayers that correspond to
throttled FrameViews. This could still result in the painting of
child PaintLayers that are not FrameViews but still reside in a
throttled FrameView.

This patch amends the paint suppression logic to skip all layers whose
containing view is throttled. We also avoid requiring a clean layout for
such layers since throttling means the layout can be out of date.

BUG=609757
Committed: https://crrev.com/8d0f39db6e6aa60e17c38e2ed7ace717baceef86
Cr-Commit-Position: refs/heads/master@{#393106}

[Sami, 2016-05-11 18:33:54]

skyostil@chromium.org changed reviewers:
+ wangxianzhu@chromium.org

[Sami, 2016-05-11 18:33:55]

PTAL. Note that I'm also changing FramePainter::paintContents() to bail out if
throttling, since it doesn't seem useful to even try painting such frames.

[Xianzhu, 2016-05-11 18:44:07]

The CQ bit was checked by wangxianzhu@chromium.org

[Xianzhu, 2016-05-11 18:44:08]

lgtm

[commit-bot: I haz the power, 2016-05-11 18:44:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1954093003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1954093003/20001

[commit-bot: I haz the power, 2016-05-11 22:18:16]

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

[commit-bot: I haz the power, 2016-05-11 22:18:17]

Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[Xianzhu, 2016-05-11 22:22:54]

The CQ bit was checked by wangxianzhu@chromium.org

[commit-bot: I haz the power, 2016-05-11 22:23:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1954093003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1954093003/20001

[commit-bot: I haz the power, 2016-05-11 23:38:51]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-05-11 23:40:35]

Description was changed from

==========
Don't try to paint graphics layers inside throttled frames

Previously painting was skipped for PaintLayers that correspond to
throttled FrameViews. This could still result in the painting of
child PaintLayers that are not FrameViews but still reside in a
throttled FrameView.

This patch amends the paint suppression logic to skip all layers whose
containing view is throttled. We also avoid requiring a clean layout for
such layers since throttling means the layout can be out of date.

BUG=609757
==========

to

==========
Don't try to paint graphics layers inside throttled frames

Previously painting was skipped for PaintLayers that correspond to
throttled FrameViews. This could still result in the painting of
child PaintLayers that are not FrameViews but still reside in a
throttled FrameView.

This patch amends the paint suppression logic to skip all layers whose
containing view is throttled. We also avoid requiring a clean layout for
such layers since throttling means the layout can be out of date.

BUG=609757

Committed: https://crrev.com/8d0f39db6e6aa60e17c38e2ed7ace717baceef86
Cr-Commit-Position: refs/heads/master@{#393106}
==========

[commit-bot: I haz the power, 2016-05-11 23:40:37]

Patchset 2 (id:??) landed as
https://crrev.com/8d0f39db6e6aa60e17c38e2ed7ace717baceef86
Cr-Commit-Position: refs/heads/master@{#393106}