Fix line wrappiing when break-word/break-all and float with 100% width

Fix line wrappiing when break-word/break-all and float with 100% width

This patch changes the line breaker to rewindToMidWordBreak() after it
computes fitBelowFloats().

rewindToMidWordBreak() uses LineWidth::availableWidth(), which
fitBelowFloats() may change if floats fill the whole line and the start
of the line is pushed down below the floats.

BUG=603679
Review URL: https://codereview.chromium.org/1900393002

Cr-Commit-Position: refs/heads/master@{#388996}
(cherry picked from commit a4e4eb3b4334905bc874dea2264b450f029fb605)

Committed: https://chromium.googlesource.com/chromium/src/+/e583672da5cd5b223702b74e65c823a66c629f6c

[kojii, 2016-04-27 01:08:33]

Description was changed from

==========
Fix line wrappiing when break-word/break-all and float with 100% width

This patch changes the line breaker to rewindToMidWordBreak() after it
computes fitBelowFloats().

rewindToMidWordBreak() uses LineWidth::availableWidth(), which
fitBelowFloats() may change if floats fill the whole line and the start
of the line is pushed down below the floats.

BUG=603679

Review URL: https://codereview.chromium.org/1900393002

Cr-Commit-Position: refs/heads/master@{#388996}
(cherry picked from commit a4e4eb3b4334905bc874dea2264b450f029fb605)
==========

to

==========
Fix line wrappiing when break-word/break-all and float with 100% width

This patch changes the line breaker to rewindToMidWordBreak() after it
computes fitBelowFloats().

rewindToMidWordBreak() uses LineWidth::availableWidth(), which
fitBelowFloats() may change if floats fill the whole line and the start
of the line is pushed down below the floats.

BUG=603679

Review URL: https://codereview.chromium.org/1900393002

Cr-Commit-Position: refs/heads/master@{#388996}
(cherry picked from commit a4e4eb3b4334905bc874dea2264b450f029fb605)

Committed:
https://chromium.googlesource.com/chromium/src/+/e583672da5cd5b223702b74e65c8...
==========

[kojii, 2016-04-27 01:08:36]

Committed patchset #1 (id:1) manually as
e583672da5cd5b223702b74e65c823a66c629f6c.