Use updated interest rect when layer needs repainting.

Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also ensuring that a new interest rect that is contained within the previous interest rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even when the layer needs repainting, as introduced in https://codereview.chromium.org/1441973003. The original rationale behind this behavior was to ensure consistency between blink and cc. With cc refactorings, this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/2a7731726042f2668cc5af06f106a616620f11e9
Cr-Commit-Position: refs/heads/master@{#418291}

[Eric Seckler, 2016-09-13 09:05:10]

Description was changed from

==========
Use updated interest rect when layer painting is required.

BUG=
==========

to

==========
Use updated interest rect when layer painting is required.

BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[Eric Seckler, 2016-09-13 09:05:51]

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

[commit-bot: I haz the power, 2016-09-13 09:05:57]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-13 10:48:51]

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

[commit-bot: I haz the power, 2016-09-13 10:48:52]

Dry run: This issue passed the CQ dry run.

[Eric Seckler, 2016-09-13 16:41:07]

Description was changed from

==========
Use updated interest rect when layer painting is required.

BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also
ensuring that a new interest rect that is contained within the previous interest
rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even
when the layer needs repainting, as introduced in
https://codereview.chromium.org/1441973003. The original rationale behind this
behavior was to ensure consistency between blink and cc. With cc refactorings,
this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[Eric Seckler, 2016-09-13 16:45:14]

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

[Eric Seckler, 2016-09-13 16:45:15]

Xianzhu, would you be happy with landing this change and monitoring for any
potential regressions? Thanks!

[Xianzhu, 2016-09-13 16:59:49]

lgtm

[Eric Seckler, 2016-09-13 17:49:28]

The CQ bit was checked by eseckler@chromium.org

[commit-bot: I haz the power, 2016-09-13 17:50:14]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-13 17:55:55]

Description was changed from

==========
Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also
ensuring that a new interest rect that is contained within the previous interest
rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even
when the layer needs repainting, as introduced in
https://codereview.chromium.org/1441973003. The original rationale behind this
behavior was to ensure consistency between blink and cc. With cc refactorings,
this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also
ensuring that a new interest rect that is contained within the previous interest
rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even
when the layer needs repainting, as introduced in
https://codereview.chromium.org/1441973003. The original rationale behind this
behavior was to ensure consistency between blink and cc. With cc refactorings,
this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[commit-bot: I haz the power, 2016-09-13 17:55:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-13 17:57:13]

Description was changed from

==========
Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also
ensuring that a new interest rect that is contained within the previous interest
rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even
when the layer needs repainting, as introduced in
https://codereview.chromium.org/1441973003. The original rationale behind this
behavior was to ensure consistency between blink and cc. With cc refactorings,
this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
Use updated interest rect when layer needs repainting.

This ensures that repaints don't use a larger rect than necessary, while also
ensuring that a new interest rect that is contained within the previous interest
rect doesn't cause a repaint on its own.

Currently, the previous interest rect is used if it didn't change too much even
when the layer needs repainting, as introduced in
https://codereview.chromium.org/1441973003. The original rationale behind this
behavior was to ensure consistency between blink and cc. With cc refactorings,
this should not be an issue any longer.

BUG=646410
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/2a7731726042f2668cc5af06f106a616620f11e9
Cr-Commit-Position: refs/heads/master@{#418291}
==========

[commit-bot: I haz the power, 2016-09-13 17:57:14]

Patchset 1 (id:??) landed as
https://crrev.com/2a7731726042f2668cc5af06f106a616620f11e9
Cr-Commit-Position: refs/heads/master@{#418291}