Move the m_didTransformToRootUpdate flag to LayoutSVGContainer

Move the m_didTransformToRootUpdate flag to LayoutSVGContainer

By pushing the update of the m_didTransformToRootUpdate flag out of the
various calculateLocalTransform() implementations, we both get
implementations of those methods that are more to the point, and expose
the redundant calls to SVGLayoutSupport::transformToRootChanged().
This also means that didTransformToRootUpdate() is devirtualized,
although it was never called "virtually" before either.
Also turn m_needsBoundariesUpdate into a single-bit flag.

BUG=603956
Committed: https://crrev.com/641397ee2d4f59b3249329030d96a2177c918db1
Cr-Commit-Position: refs/heads/master@{#388516}

[fs, 2016-04-20 13:08:08]

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

[Stephen Chennney, 2016-04-20 16:23:23]

schenney@chromium.org changed reviewers:
+ schenney@chromium.org

[Stephen Chennney, 2016-04-20 16:23:23]

lgtm

[fs, 2016-04-20 16:27:54]

The CQ bit was checked by fs@opera.com

[commit-bot: I haz the power, 2016-04-20 16:28:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1904683002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1904683002/1

[commit-bot: I haz the power, 2016-04-20 16:32:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:24:09]

Description was changed from

==========
Move the m_didTransformToRootUpdate flag to LayoutSVGContainer

By pushing the update of the m_didTransformToRootUpdate flag out of the
various calculateLocalTransform() implementations, we both get
implementations of those methods that are more to the point, and expose
the redundant calls to SVGLayoutSupport::transformToRootChanged().
This also means that didTransformToRootUpdate() is devirtualized,
although it was never called "virtually" before either.
Also turn m_needsBoundariesUpdate into a single-bit flag.

BUG=603956
==========

to

==========
Move the m_didTransformToRootUpdate flag to LayoutSVGContainer

By pushing the update of the m_didTransformToRootUpdate flag out of the
various calculateLocalTransform() implementations, we both get
implementations of those methods that are more to the point, and expose
the redundant calls to SVGLayoutSupport::transformToRootChanged().
This also means that didTransformToRootUpdate() is devirtualized,
although it was never called "virtually" before either.
Also turn m_needsBoundariesUpdate into a single-bit flag.

BUG=603956

Committed: https://crrev.com/641397ee2d4f59b3249329030d96a2177c918db1
Cr-Commit-Position: refs/heads/master@{#388516}
==========

[commit-bot: I haz the power, 2016-04-22 19:24:10]

Patchset 1 (id:??) landed as
https://crrev.com/641397ee2d4f59b3249329030d96a2177c918db1
Cr-Commit-Position: refs/heads/master@{#388516}