WebPPictureHasTransparency  359 third_party/libwebp/enc/alpha.c   enc->has_alpha_ = WebPPictureHasTransparency(enc->pic_);
WebPPictureHasTransparency 1123 third_party/libwebp/enc/vp8l.c   has_alpha = WebPPictureHasTransparency(picture);
WebPPictureHasTransparency  470 third_party/libwebp/webp/encode.h WEBP_EXTERN(int) WebPPictureHasTransparency(const WebPPicture* picture);