SkSVGCanvas and co. depend on expat.

SkSVGCanvas depends on SkSVGDevice which depends on SkXMLWriter.cpp
which depends on expat.  So don't build any of this if we don't have
expat.

Change-Id: I1ffca2d58d3b607febf11ce75abdd6efe08f49c8
Reviewed-on: https://skia-review.googlesource.com/8289
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed