Push the top margin of floats past all useless fragmentainers.

Push the top margin of floats past all useless fragmentainers.

The top margin of a float is not to be split across fragmentainer boundaries if
it can be avoided. We had code to push the margin over to the next
fragmentainer if we were out of space, but we may actually have to push it all
the way to the next fragmentainer *group* (i.e column row) in some cases.

calculatePaginationStrutToFitContent() helps us get there. That's the method we
use to push oversize content (lines and unbreakable blocks) to a better place,
so let's use it for margins too.

Review-Url: https://codereview.chromium.org/2759693002
Cr-Commit-Position: refs/heads/master@{#457881}
Committed: https://chromium.googlesource.com/chromium/src/+/fd525b8b047cf0843d05107567c14aea9a5858e0

[mstensho (USE GERRIT), 2017-03-17 15:41:41]

The CQ bit was checked by mstensho@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-17 15:41:58]

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, 2017-03-17 16:24:08]

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

[commit-bot: I haz the power, 2017-03-17 16:24:08]

Dry run: Try jobs failed on following builders:
  linux_chromium_asan_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[mstensho (USE GERRIT), 2017-03-17 18:31:59]

The CQ bit was checked by mstensho@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2017-03-17 18:32:53]

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, 2017-03-17 19:49:51]

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

[commit-bot: I haz the power, 2017-03-17 19:49:51]

Dry run: This issue passed the CQ dry run.

[mstensho (USE GERRIT), 2017-03-17 20:23:48]

mstensho@opera.com changed reviewers:
+ eae@chromium.org

[eae, 2017-03-17 20:42:57]

OK, LGTM

[eae, 2017-03-17 20:43:00]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2017-03-17 20:43:25]

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, 2017-03-17 20:49:40]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489783380375990, "parent_rev":
"17df3aba4439d06e3e4be93bc949113443c7ee4e", "commit_rev":
"fd525b8b047cf0843d05107567c14aea9a5858e0"}

[commit-bot: I haz the power, 2017-03-17 20:50:28]

Description was changed from

==========
Push the top margin of floats past all useless fragmentainers.

The top margin of a float is not to be split across fragmentainer boundaries if
it can be avoided. We had code to push the margin over to the next
fragmentainer if we were out of space, but we may actually have to push it all
the way to the next fragmentainer *group* (i.e column row) in some cases.

calculatePaginationStrutToFitContent() helps us get there. That's the method we
use to push oversize content (lines and unbreakable blocks) to a better place,
so let's use it for margins too.
==========

to

==========
Push the top margin of floats past all useless fragmentainers.

The top margin of a float is not to be split across fragmentainer boundaries if
it can be avoided. We had code to push the margin over to the next
fragmentainer if we were out of space, but we may actually have to push it all
the way to the next fragmentainer *group* (i.e column row) in some cases.

calculatePaginationStrutToFitContent() helps us get there. That's the method we
use to push oversize content (lines and unbreakable blocks) to a better place,
so let's use it for margins too.

Review-Url: https://codereview.chromium.org/2759693002
Cr-Commit-Position: refs/heads/master@{#457881}
Committed:
https://chromium.googlesource.com/chromium/src/+/fd525b8b047cf0843d05107567c1...
==========

[commit-bot: I haz the power, 2017-03-17 20:50:29]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/fd525b8b047cf0843d05107567c1...