Replace third_party/gif: Preflight changes
Something is breaking client code in unexpected ways. Let's try this
piecemeal.
- skia_libgifcodec_path gn var. Default is
third_party/externals/libgifcodec. Anfroid framework uses
third_party/libgifcodec.
- skia_use_libgifcodec gn var; defaults to !skia_use_wuffs. Allow
disabling both codecs.
- GN template("optional"): add public_include_dirs, similar to
public_defines.
- SK_USE_LIBGIFCODEC, ifdef for skia_use_libgifcodec.
- SkCodec.cpp: use SK_USE_LIBGIFCODEC
Original CL: https://review.skia.org/254582
Cq-Include-Trybots: luci.skia.skia.primary:Build-Debian9-Clang-x86-devrel-Android_SKQP
Bug: skia:9654
Change-Id: I70561f5f945656065e4b318d5fff505961fb0b6b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/255578
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
5 files changed
