cc: Visible Rect Calculation use RectF between transformations

cc: Visible Rect Calculation use RectF between transformations

Currently visible rect calculation expands to enclosing rect in target
space, and then transform to layer space, and expand to enclosing rect
in layer space again. Remove the first expansion to rect.

R=ajuma
BUG=594675
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/d15784430af415d27d64ff504cfc8cc4c86f2f29
Cr-Commit-Position: refs/heads/master@{#398333}

[weiliangc, 2016-05-25 20:05:13]

Description was changed from

==========
cc: Visible Rect Calculation use RectF between transformations

Currently visible rect calculation expands to enclosing rect in target
space, and then transform to layer space, and expand to enclosing rect
in layer space again. Remove the first expansion to rect.

R=ajuma
BUG=594675
==========

to

==========
cc: Visible Rect Calculation use RectF between transformations

Currently visible rect calculation expands to enclosing rect in target
space, and then transform to layer space, and expand to enclosing rect
in layer space again. Remove the first expansion to rect.

R=ajuma
BUG=594675
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
==========

[weiliangc, 2016-05-25 20:09:31]

On top of separating, try to use RectF as much as possible. This should make new
attempt to use clip tree calculation directly results closer, and make
transition into that smoother.

[ajuma, 2016-05-25 20:59:51]

lgtm

[weiliangc, 2016-06-07 16:09:01]

The CQ bit was checked by weiliangc@chromium.org

[weiliangc, 2016-06-07 16:09:02]

The patchset sent to the CQ was uploaded after l-g-t-m from ajuma@chromium.org
Link to the patchset: https://codereview.chromium.org/2015653002/#ps40001
(title: "rebase")

[commit-bot: I haz the power, 2016-06-07 16:32:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2015653002/40001

[commit-bot: I haz the power, 2016-06-07 17:57:45]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-06-07 18:00:04]

Description was changed from

==========
cc: Visible Rect Calculation use RectF between transformations

Currently visible rect calculation expands to enclosing rect in target
space, and then transform to layer space, and expand to enclosing rect
in layer space again. Remove the first expansion to rect.

R=ajuma
BUG=594675
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
==========

to

==========
cc: Visible Rect Calculation use RectF between transformations

Currently visible rect calculation expands to enclosing rect in target
space, and then transform to layer space, and expand to enclosing rect
in layer space again. Remove the first expansion to rect.

R=ajuma
BUG=594675
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Committed: https://crrev.com/d15784430af415d27d64ff504cfc8cc4c86f2f29
Cr-Commit-Position: refs/heads/master@{#398333}
==========

[commit-bot: I haz the power, 2016-06-07 18:00:05]

Patchset 3 (id:??) landed as
https://crrev.com/d15784430af415d27d64ff504cfc8cc4c86f2f29
Cr-Commit-Position: refs/heads/master@{#398333}