Mantaroh Yoshinaga df05b9f9a2 Bug 1062106 part 1 - Remove special handling of attributeType='XML'. r=birtles,longsonr+218550 ...

This patch removes handling of the 'attributeType' attribute so that we behave
as if attributeType is always 'auto'. This means that for CSS properties we
always animate them as CSS properties (i.e. we animate them as part of the
SMIL override stylesheet) rather than mapped attributes.

The one special case is width/height on an outer SVG. Previously we animated
this as a mapped attribute since Web compatibility requires that the
width/height on an outer SVG, when set explicitly, are mapped to style.
However, we can produce the same behavior by animating these as CSS properties
(as opposed to mapped attributes). There is no observable difference in results
returned by the SVG DOM APIs, only the level at which the result is added to
the cascade: the SMIL override stylesheet instead of the attribute animation
presentation hint level.

As part of this patch, we animate width/height on outer SVG elements as CSS
properties as opposed to mapped attributes both for consistency and also so
we can remove the animated mapped attribute code altogether.

MozReview-Commit-ID: Ll1LWWRQ66R

--HG--
extra : rebase_source : bd513e191e3d0ba2a1e982eea4c548392bf5817d

2017-03-21 15:42:17 +09:00

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