Move SVGTextMetrics::constructTextRun to SVGTextMetricsBuilder

Move SVGTextMetrics::constructTextRun to SVGTextMetricsBuilder

New resting place is the SVGTextMetricsCalculator helper class.
This avoids using this function to create runs based on the wrong BiDi
context.
Also wrap the static bits of SVGTextMetricsBuilder.cpp in an unnamed
namespace, removing a few 'static' keywords.

BUG=596721, 594058
Committed: https://crrev.com/9aa3054b0d2bacf5cc9774de798ebb35cfa88f01
Cr-Commit-Position: refs/heads/master@{#382938}

[fs, 2016-03-23 15:55:17]

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

[pdr., 2016-03-23 21:42:31]

LGTM

[pdr., 2016-03-23 21:42:33]

The CQ bit was checked by pdr@chromium.org

[commit-bot: I haz the power, 2016-03-23 21:43:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1829713002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1829713002/1

[commit-bot: I haz the power, 2016-03-23 22:12:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-23 22:15:05]

Description was changed from

==========
Move SVGTextMetrics::constructTextRun to SVGTextMetricsBuilder

New resting place is the SVGTextMetricsCalculator helper class.
This avoids using this function to create runs based on the wrong BiDi
context.
Also wrap the static bits of SVGTextMetricsBuilder.cpp in an unnamed
namespace, removing a few 'static' keywords.

BUG=596721, 594058
==========

to

==========
Move SVGTextMetrics::constructTextRun to SVGTextMetricsBuilder

New resting place is the SVGTextMetricsCalculator helper class.
This avoids using this function to create runs based on the wrong BiDi
context.
Also wrap the static bits of SVGTextMetricsBuilder.cpp in an unnamed
namespace, removing a few 'static' keywords.

BUG=596721, 594058

Committed: https://crrev.com/9aa3054b0d2bacf5cc9774de798ebb35cfa88f01
Cr-Commit-Position: refs/heads/master@{#382938}
==========

[commit-bot: I haz the power, 2016-03-23 22:15:06]

Patchset 1 (id:??) landed as
https://crrev.com/9aa3054b0d2bacf5cc9774de798ebb35cfa88f01
Cr-Commit-Position: refs/heads/master@{#382938}