Always create a BidiRun in SVGTextMetricsBuilder

Always create a BidiRun in SVGTextMetricsBuilder

Create a BidiRun for the 'override' case too, to avoid a bunch of
special cases. Since we always have a BidiRun now, null-checks can be
removed, and code simplified a bit. (Hopefully even more in the future.)
Also make "8-bit" (latin1) strings take this code-path. (This was
handled by the SimpleShaper path previously.)

BUG=594058
Committed: https://crrev.com/c53c160e1391842324a60c1391db9b6ff7ccf5bf
Cr-Commit-Position: refs/heads/master@{#383224}

[fs, 2016-03-24 19:01:33]

fs@opera.com changed reviewers:
+ pdr@chromium.org

[pdr., 2016-03-25 01:58:30]

The CQ bit was checked by pdr@chromium.org

[pdr., 2016-03-25 01:58:31]

lgtm

[commit-bot: I haz the power, 2016-03-25 01:58:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1826263002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1826263002/1

[commit-bot: I haz the power, 2016-03-25 02:04:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-25 02:05:34]

Description was changed from

==========
Always create a BidiRun in SVGTextMetricsBuilder

Create a BidiRun for the 'override' case too, to avoid a bunch of
special cases. Since we always have a BidiRun now, null-checks can be
removed, and code simplified a bit. (Hopefully even more in the future.)
Also make "8-bit" (latin1) strings take this code-path. (This was
handled by the SimpleShaper path previously.)

BUG=594058
==========

to

==========
Always create a BidiRun in SVGTextMetricsBuilder

Create a BidiRun for the 'override' case too, to avoid a bunch of
special cases. Since we always have a BidiRun now, null-checks can be
removed, and code simplified a bit. (Hopefully even more in the future.)
Also make "8-bit" (latin1) strings take this code-path. (This was
handled by the SimpleShaper path previously.)

BUG=594058

Committed: https://crrev.com/c53c160e1391842324a60c1391db9b6ff7ccf5bf
Cr-Commit-Position: refs/heads/master@{#383224}
==========

[commit-bot: I haz the power, 2016-03-25 02:05:36]

Patchset 1 (id:??) landed as
https://crrev.com/c53c160e1391842324a60c1391db9b6ff7ccf5bf
Cr-Commit-Position: refs/heads/master@{#383224}