Mark layer needsPaintPhaseFloat if a LayoutBlockFlow contains float

Mark layer needsPaintPhaseFloat if a LayoutBlockFlow contains float

This ensures that the flag is set on the correct layer that will
paint the floats.

BUG=603910
TEST=PaintLayerPainterTest.PaintPhaseFloatUnderInlineLayer

Committed: https://crrev.com/0f04dfab4e324972733e1707476c034f52467037
Cr-Commit-Position: refs/heads/master@{#388644}

[Xianzhu, 2016-04-19 18:20:09]

wangxianzhu@chromium.org changed reviewers:
+ chrishtr@chromium.org, pdr@chromium.org

[chrishtr, 2016-04-20 23:16:41]

The CQ bit was checked by chrishtr@chromium.org

[chrishtr, 2016-04-20 23:16:42]

lgtm

[commit-bot: I haz the power, 2016-04-20 23:17:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1899063002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1899063002/20001

[commit-bot: I haz the power, 2016-04-21 00:45:32]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-22 19:29:36]

Description was changed from

==========
Mark layer needsPaintPhaseFloat if a LayoutBlockFlow contains float

This ensures that the flag is set on the correct layer that will
paint the floats.

BUG=603910
TEST=PaintLayerPainterTest.PaintPhaseFloatUnderInlineLayer
==========

to

==========
Mark layer needsPaintPhaseFloat if a LayoutBlockFlow contains float

This ensures that the flag is set on the correct layer that will
paint the floats.

BUG=603910
TEST=PaintLayerPainterTest.PaintPhaseFloatUnderInlineLayer

Committed: https://crrev.com/0f04dfab4e324972733e1707476c034f52467037
Cr-Commit-Position: refs/heads/master@{#388644}
==========

[commit-bot: I haz the power, 2016-04-22 19:29:37]

Patchset 2 (id:??) landed as
https://crrev.com/0f04dfab4e324972733e1707476c034f52467037
Cr-Commit-Position: refs/heads/master@{#388644}