diff --git a/go.sum b/go.sum
index 0af0eb3..9be6f3c 100644
--- a/go.sum
+++ b/go.sum
@@ -455,6 +455,8 @@
 github.com/huandu/xstrings v1.2.0/go.mod h1:DvyZB1rfVYsBIigL8HwpZgxHwXozlTgGqn63UyNX5k4=
 github.com/huandu/xstrings v1.3.0 h1:gvV6jG9dTgFEncxo+AF7PH6MZXi/vZl25owA/8Dg8Wo=
 github.com/huandu/xstrings v1.3.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
+github.com/huandu/xstrings v1.3.1 h1:4jgBlKK6tLKFvO8u5pmYjG91cqytmDCDvGh7ECVFfFs=
+github.com/huandu/xstrings v1.3.1/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/huin/goserial v0.0.0-20121012073615-7b90efdb22b1 h1:v6symRpmVeKVUqq1grXnDDtus+lmQufUhgZ/lgMr4nU=
 github.com/huin/goserial v0.0.0-20121012073615-7b90efdb22b1/go.mod h1:x4wgpgRJT44loaDTf8/wWCkvTlhrKlVlaHATk7Leqlw=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
@@ -1009,6 +1011,8 @@
 go.skia.org/infra v0.0.0-20200410210345-22d47761825b/go.mod h1:AmWwqwUAQ1aZuiJuVtXTD701KAjDG/ao35PLLYsdiBQ=
 go.skia.org/infra v0.0.0-20200412015334-dae60125f8fd h1:FyTfZ5lX0z6w72KLFwx1REylXC63dyRLbOok4ATgzNs=
 go.skia.org/infra v0.0.0-20200412015334-dae60125f8fd/go.mod h1:WG1Bk7K8KrCgdx6xxehaRNQzHQVKcIcjPDwyuiSrFJQ=
+go.skia.org/infra v0.0.0-20200412052613-78563fc49947 h1:8zrKuGWUOdf6IFiY0StvVYQCNxvKscAgOTD7vS2+jx4=
+go.skia.org/infra v0.0.0-20200412052613-78563fc49947/go.mod h1:PEv9Qk1zv4L2xhADXsoE08UT7OBgqu7X++4a54NHLw8=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
@@ -1378,6 +1382,8 @@
 golang.org/x/tools v0.0.0-20200410040751-3bd20875a2eb/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200410194907-79a7a3126eef h1:RHORRhs540cYZYrzgU2CPUyykkwZM78hGdzocOo9P8A=
 golang.org/x/tools v0.0.0-20200410194907-79a7a3126eef/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200413015812-1f08ef6002a8 h1:1TnYi6m8UoNpEKS1wxgR8GcHPe2YDgYoDjAedVuX+Q0=
+golang.org/x/tools v0.0.0-20200413015812-1f08ef6002a8/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=