Don't decompose retargeted rotate() transform transitions

Don't decompose retargeted rotate() transform transitions

2D rotate() transform operations were always interpolating as 3D rotate()
operations.
This resulted in interpolations between interpolated 2D rotate()s and
matching 2D rotate()s using matrix decomposition as the operation
types no longer matched.

This change ensures non-matrix-decomposition interpolation between
rotate() operations produces the same type of rotate() operation.

BUG=605021
Committed: https://crrev.com/b721ba4c7c32b789911cdf125f4871f9b442320b
Cr-Commit-Position: refs/heads/master@{#389696}

[alancutter (OOO until 2018), 2016-04-21 07:31:41]

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

[alancutter (OOO until 2018), 2016-04-21 07:31:42]

Looks like my refactor patch to rotate() transforms inadvertently changed
transition behaviour.
This patch corrects the mistake.

[jbroman, 2016-04-21 15:21:23]

lgtm

[alancutter (OOO until 2018), 2016-04-26 00:50:54]

The CQ bit was checked by alancutter@chromium.org

[commit-bot: I haz the power, 2016-04-26 00:51:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1909863002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1909863002/1

[commit-bot: I haz the power, 2016-04-26 04:33:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-26 04:34:52]

Description was changed from

==========
Don't decompose retargeted rotate() transform transitions

2D rotate() transform operations were always interpolating as 3D rotate()
operations.
This resulted in interpolations between interpolated 2D rotate()s and
matching 2D rotate()s using matrix decomposition as the operation
types no longer matched.

This change ensures non-matrix-decomposition interpolation between
rotate() operations produces the same type of rotate() operation.

BUG=605021
==========

to

==========
Don't decompose retargeted rotate() transform transitions

2D rotate() transform operations were always interpolating as 3D rotate()
operations.
This resulted in interpolations between interpolated 2D rotate()s and
matching 2D rotate()s using matrix decomposition as the operation
types no longer matched.

This change ensures non-matrix-decomposition interpolation between
rotate() operations produces the same type of rotate() operation.

BUG=605021

Committed: https://crrev.com/b721ba4c7c32b789911cdf125f4871f9b442320b
Cr-Commit-Position: refs/heads/master@{#389696}
==========

[commit-bot: I haz the power, 2016-04-26 04:34:53]

Patchset 1 (id:??) landed as
https://crrev.com/b721ba4c7c32b789911cdf125f4871f9b442320b
Cr-Commit-Position: refs/heads/master@{#389696}