[svg] Add plumbing for color-interpolation-filters property

The default colorspace for filter effects is linear RGB, as specified in
Currently we perform all filtering in the destination colorspace. This
CL adds the new presentation attribute with the default setting
(according to the spec) of linear RGB.

This CL does not actually implement any colorspace transformations for

Bug: skia:10841
Change-Id: Id778ad3fa5cb6e0aed756584a50880edd9d82e2b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/352738
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
10 files changed