Add SkSVGFeMerge.h to public.bzl

Follow-up to http://review.skia.org/823896

Change-Id: Ida1571a9da8895b386d90185a1bf323a798eb813
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/852016
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Florin Malita <fmalita@google.com>
1 file changed