[svg] Fix multiple transforms specified

The transform attribute can accept a comma-wsp separated list of
transformations. Relevant test is coords-transformattr-01-f.

Change-Id: I22dd4b65dc4922d9f5b0ca168cd1fc38fca30ec8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/283777
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Tyler Denniston <tdenniston@google.com>
2 files changed