Add additive animation support for CSS property background-size

Add additive animation support for CSS property background-size

This patch adds support for composite modes on background-size CSS animations
via element.animate().

This change also makes interpolation between background-size and
-webkit-mask-size fall back to 50% flip behaviour if a keyword is used
to bring us inline with spec text:
https://drafts.csswg.org/css-backgrounds-3/#the-background-size

BUG=437696
Committed: https://crrev.com/332293fdcd6ebf1b489304e5d52903ddb2eaf5ea
Cr-Commit-Position: refs/heads/master@{#378104}

[alancutter (OOO until 2018), 2016-02-12 03:07:20]

alancutter@chromium.org changed reviewers:
+ ericwilligers@chromium.org

[Eric Willigers, 2016-02-16 06:57:01]

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
File third_party/WebKit/Source/core/animation/CSSLengthListInterpolationType.cpp
(left):

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
third_party/WebKit/Source/core/animation/CSSLengthListInterpolationType.cpp:77:
if (!state.parentStyle())
Why isn't this needed anymore?

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
File third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp
(right):

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp:88:
void (FillLayer::*setFillSize)(FillSize);
Consider changing FillLayer::setSize(FillSize f) to accept const reference.

[alancutter (OOO until 2018), 2016-02-17 06:47:12]

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
File third_party/WebKit/Source/core/animation/CSSLengthListInterpolationType.cpp
(left):

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
third_party/WebKit/Source/core/animation/CSSLengthListInterpolationType.cpp:77:
if (!state.parentStyle())
On 2016/02/16 at 06:57:01, Eric Willigers wrote:
> Why isn't this needed anymore?

This is a legacy condition from when we were converting keyframes during
element.animate(), we now wait until style resolve to do the conversion so we
will always have a parent style.
I plan to remove more of these in a future clean up patch.

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
File third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp
(right):

https://codereview.chromium.org/1689383002/diff/20001/third_party/WebKit/Sour...
third_party/WebKit/Source/core/animation/LengthListPropertyFunctions.cpp:88:
void (FillLayer::*setFillSize)(FillSize);
On 2016/02/16 at 06:57:01, Eric Willigers wrote:
> Consider changing FillLayer::setSize(FillSize f) to accept const reference.

Done.

[Eric Willigers, 2016-02-17 10:49:04]

lgtm

[alancutter (OOO until 2018), 2016-02-17 23:25:47]

alancutter@chromium.org changed reviewers:
+ dstockwell@chromium.org

[alancutter (OOO until 2018), 2016-02-17 23:25:47]

+dstockwell for core.gypi and core/style changes.

[dstockwell, 2016-02-18 02:59:00]

lgtm

[alancutter (OOO until 2018), 2016-02-25 03:40:17]

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

[commit-bot: I haz the power, 2016-02-25 03:42:50]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1689383002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1689383002/60001

[commit-bot: I haz the power, 2016-02-25 05:02:08]

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

[commit-bot: I haz the power, 2016-02-25 05:02:09]

Dry run: 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_...)

[alancutter (OOO until 2018), 2016-02-26 18:19:38]

The CQ bit was checked by alancutter@chromium.org

[alancutter (OOO until 2018), 2016-02-26 18:19:38]

The patchset sent to the CQ was uploaded after l-g-t-m from
dstockwell@chromium.org, ericwilligers@chromium.org
Link to the patchset: https://codereview.chromium.org/1689383002/#ps60001
(title: "Rebased")

[commit-bot: I haz the power, 2016-02-26 18:21:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1689383002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1689383002/60001

[commit-bot: I haz the power, 2016-02-26 21:37:30]

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

[commit-bot: I haz the power, 2016-02-26 21:37:32]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/linux_androi...)

[alancutter (OOO until 2018), 2016-02-26 23:57:14]

The CQ bit was checked by alancutter@chromium.org

[commit-bot: I haz the power, 2016-02-27 00:02:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1689383002/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1689383002/60001

[commit-bot: I haz the power, 2016-02-27 03:31:14]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2016-02-27 03:32:33]

Description was changed from

==========
Add additive animation support for CSS property background-size

This patch adds support for composite modes on background-size CSS animations
via element.animate().

This change also makes interpolation between background-size and
-webkit-mask-size fall back to 50% flip behaviour if a keyword is used
to bring us inline with spec text:
https://drafts.csswg.org/css-backgrounds-3/#the-background-size

BUG=437696
==========

to

==========
Add additive animation support for CSS property background-size

This patch adds support for composite modes on background-size CSS animations
via element.animate().

This change also makes interpolation between background-size and
-webkit-mask-size fall back to 50% flip behaviour if a keyword is used
to bring us inline with spec text:
https://drafts.csswg.org/css-backgrounds-3/#the-background-size

BUG=437696

Committed: https://crrev.com/332293fdcd6ebf1b489304e5d52903ddb2eaf5ea
Cr-Commit-Position: refs/heads/master@{#378104}
==========

[commit-bot: I haz the power, 2016-02-27 03:32:35]

Patchset 4 (id:??) landed as
https://crrev.com/332293fdcd6ebf1b489304e5d52903ddb2eaf5ea
Cr-Commit-Position: refs/heads/master@{#378104}