[SPV2] Add the device scale factor to the root transform node

[SPV2] Add the device scale factor to the root transform node

This patch sets the device scale factor on cc's root transform node,
fixing several layout tests. This approach is different from how
cc builds property trees (see post_local_scale_factor in
property_tree_builder's AddTransformNodeIfNeeded) where a post_local
transform is used, but aligns closer to blink's approach of using a
single transform per transform node.

This approach is temporary and will need to be refactored when we
begin supporting viewport transforms such as pinch-zoom.

BUG=642240
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/73249085cf0d583b3267d500e3a48aaf514596c7
Cr-Commit-Position: refs/heads/master@{#417394}

[pdr., 2016-09-08 04:42:58]

Description was changed from

==========
[SPV2] Add the device scale factor to the root transform node

This patch sets the device scale factor on cc's root transform node,
fixing several layout tests. This approach is different from how
cc builds property trees (see post_local_scale_factor in
property_tree_builder's AddTransformNodeIfNeeded) where a post_local
transform is used, but aligns closer to blink's approach of using a
single transform per transform node.

This approach is temporary and will need to be refactored when we
begin supporting viewport transforms such as pinch-zoom.

BUG=642240
==========

to

==========
[SPV2] Add the device scale factor to the root transform node

This patch sets the device scale factor on cc's root transform node,
fixing several layout tests. This approach is different from how
cc builds property trees (see post_local_scale_factor in
property_tree_builder's AddTransformNodeIfNeeded) where a post_local
transform is used, but aligns closer to blink's approach of using a
single transform per transform node.

This approach is temporary and will need to be refactored when we
begin supporting viewport transforms such as pinch-zoom.

BUG=642240
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

[pdr., 2016-09-08 05:59:44]

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

[commit-bot: I haz the power, 2016-09-08 05:59:54]

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, 2016-09-08 08:05:50]

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

[commit-bot: I haz the power, 2016-09-08 08:05:51]

Dry run: This issue passed the CQ dry run.

[pdr., 2016-09-08 17:23:30]

pdr@chromium.org changed reviewers:
+ ajuma@chromium.org, chrishtr@chromium.org, trchen@chromium.org

[ajuma, 2016-09-08 17:30:14]

lgtm

[pdr., 2016-09-08 20:50:25]

The CQ bit was checked by pdr@chromium.org

[commit-bot: I haz the power, 2016-09-08 20:51:16]

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, 2016-09-08 20:56:52]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-08 21:00:05]

Description was changed from

==========
[SPV2] Add the device scale factor to the root transform node

This patch sets the device scale factor on cc's root transform node,
fixing several layout tests. This approach is different from how
cc builds property trees (see post_local_scale_factor in
property_tree_builder's AddTransformNodeIfNeeded) where a post_local
transform is used, but aligns closer to blink's approach of using a
single transform per transform node.

This approach is temporary and will need to be refactored when we
begin supporting viewport transforms such as pinch-zoom.

BUG=642240
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
==========

to

==========
[SPV2] Add the device scale factor to the root transform node

This patch sets the device scale factor on cc's root transform node,
fixing several layout tests. This approach is different from how
cc builds property trees (see post_local_scale_factor in
property_tree_builder's AddTransformNodeIfNeeded) where a post_local
transform is used, but aligns closer to blink's approach of using a
single transform per transform node.

This approach is temporary and will need to be refactored when we
begin supporting viewport transforms such as pinch-zoom.

BUG=642240
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Committed: https://crrev.com/73249085cf0d583b3267d500e3a48aaf514596c7
Cr-Commit-Position: refs/heads/master@{#417394}
==========

[commit-bot: I haz the power, 2016-09-08 21:00:07]

Patchset 2 (id:??) landed as
https://crrev.com/73249085cf0d583b3267d500e3a48aaf514596c7
Cr-Commit-Position: refs/heads/master@{#417394}