Revert of Remove UpdateScrollTree

Revert of Remove UpdateScrollTree (patchset #1 id:1 of https://codereview.chromium.org/2822603002/ )

Reason for revert:
Patch failed to handle changes to scroll clip layer bounds.

Original issue's description:
> Remove draw_property_utils's UpdateScrollTree
> 
> This function was added in [1] but is not needed. Removing this function
> lets us remove one more user of scroll_node's owning_layer_id.
> 
> [1] https://chromium.googlesource.com/chromium/src/+/1c0802c3c4c03b43efea23b82d7e624f1d8c7b57
> 
> BUG=693740
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2822603002
> Cr-Commit-Position: refs/heads/master@{#465342}
> Committed: https://chromium.googlesource.com/chromium/src/+/a91f5b16d907a71eb79896a54fc8c368d11dc061

TBR=weiliangc@chromium.org,enne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=693740
Review-Url: https://codereview.chromium.org/2830473002
Cr-Commit-Position: refs/heads/master@{#465390}
Committed: https://chromium.googlesource.com/chromium/src/+/2501a834815e3a9e460051bd98f1eb49c7357e7b

[pdr., 2017-04-18 21:56:32]

The CQ bit was checked by pdr@chromium.org

[pdr., 2017-04-18 21:56:32]

Created Revert of Remove UpdateScrollTree

[commit-bot: I haz the power, 2017-04-18 21:57:15]

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, 2017-04-18 21:57:40]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492552592336440, "parent_rev":
"ce95e5d83f3538e5797b85f986e52afda8a7a40a", "commit_rev":
"2501a834815e3a9e460051bd98f1eb49c7357e7b"}

[commit-bot: I haz the power, 2017-04-18 21:57:54]

Description was changed from

==========
Revert of Remove UpdateScrollTree (patchset #1 id:1 of
https://codereview.chromium.org/2822603002/ )

Reason for revert:
Patch failed to handle changes to scroll clip layer bounds.

Original issue's description:
> Remove draw_property_utils's UpdateScrollTree
> 
> This function was added in [1] but is not needed. Removing this function
> lets us remove one more user of scroll_node's owning_layer_id.
> 
> [1]
https://chromium.googlesource.com/chromium/src/+/1c0802c3c4c03b43efea23b82d7e...
> 
> BUG=693740
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2822603002
> Cr-Commit-Position: refs/heads/master@{#465342}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a91f5b16d907a71eb79896a54fc8...

TBR=weiliangc@chromium.org,enne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=693740
==========

to

==========
Revert of Remove UpdateScrollTree (patchset #1 id:1 of
https://codereview.chromium.org/2822603002/ )

Reason for revert:
Patch failed to handle changes to scroll clip layer bounds.

Original issue's description:
> Remove draw_property_utils's UpdateScrollTree
> 
> This function was added in [1] but is not needed. Removing this function
> lets us remove one more user of scroll_node's owning_layer_id.
> 
> [1]
https://chromium.googlesource.com/chromium/src/+/1c0802c3c4c03b43efea23b82d7e...
> 
> BUG=693740
>
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
> 
> Review-Url: https://codereview.chromium.org/2822603002
> Cr-Commit-Position: refs/heads/master@{#465342}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a91f5b16d907a71eb79896a54fc8...

TBR=weiliangc@chromium.org,enne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=693740

Review-Url: https://codereview.chromium.org/2830473002
Cr-Commit-Position: refs/heads/master@{#465390}
Committed:
https://chromium.googlesource.com/chromium/src/+/2501a834815e3a9e460051bd98f1...
==========

[commit-bot: I haz the power, 2017-04-18 21:57:55]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/2501a834815e3a9e460051bd98f1...