diff --git a/go.sum b/go.sum
index 2b17ad2..0ad64c1 100644
--- a/go.sum
+++ b/go.sum
@@ -690,6 +690,8 @@
 go.chromium.org/luci v0.0.0-20200430042333-6d74091d0061/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.chromium.org/luci v0.0.0-20200501022719-17242f68b20f h1:t61ZYO8ujWGTvjvboVu0gZCEdJvc9+oHFXSS4oQXgiI=
 go.chromium.org/luci v0.0.0-20200501022719-17242f68b20f/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20200502041843-0b2779a88016 h1:UA4s3cfByqOic1VfzIySw25skS5anOXJxAqzj7kazQA=
+go.chromium.org/luci v0.0.0-20200502041843-0b2779a88016/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.mongodb.org/mongo-driver v1.1.0/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
 go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
@@ -712,6 +714,8 @@
 go.skia.org/infra v0.0.0-20200429221357-e24595334f06/go.mod h1:oBRD8ErmsFrK7iGrag6lV1O0mGWUHkUEKnJMz5bLIuo=
 go.skia.org/infra v0.0.0-20200430185047-3ccc19b46660 h1:nOvp0ldpMpjRefFY1KZP7hC8YbIupTE/eJRKdFUh618=
 go.skia.org/infra v0.0.0-20200430185047-3ccc19b46660/go.mod h1:gd0b6Q/5kysjM1NolzPHnccv4P4osplGQ2C21dsJuJc=
+go.skia.org/infra v0.0.0-20200501203151-eb0a288b018e h1:yafGaDsNNf4HDJCvLRhZTZK7jKD6SwLzD104hNdRnlU=
+go.skia.org/infra v0.0.0-20200501203151-eb0a288b018e/go.mod h1:gd0b6Q/5kysjM1NolzPHnccv4P4osplGQ2C21dsJuJc=
 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=
@@ -829,6 +833,8 @@
 golang.org/x/net v0.0.0-20200421231249-e086a090c8fd/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 h1:Jcxah/M+oLZ/R4/z5RzfPzGbPXnVDPkEDtf2JnuxN+U=
 golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5 h1:WQ8q63x+f/zpC8Ac1s9wLElVoHhm32p6tudrU72n1QA=
+golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181106182150-f42d05182288/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -904,6 +910,8 @@
 golang.org/x/sys v0.0.0-20200428200454-593003d681fa/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200430202703-d923437fa56d h1:xmcims+WSpFuY56YEzkKF6IMDxYAVDRipkQRJfXUBZk=
 golang.org/x/sys v0.0.0-20200430202703-d923437fa56d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200501145240-bc7a7d42d5c3 h1:5B6i6EAiSYyejWfvc5Rc9BbI3rzIsrrXfAQBWnYfn+w=
+golang.org/x/sys v0.0.0-20200501145240-bc7a7d42d5c3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -989,6 +997,8 @@
 golang.org/x/tools v0.0.0-20200430040329-4b814e061378/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200501005904-d351ea090f9b h1:2hSR2MyOaYEy6yJYg/CpErymr/m7xJEJpm9kfT7ZMg4=
 golang.org/x/tools v0.0.0-20200501005904-d351ea090f9b/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200501205727-542909fd9944 h1:H2fcUfqnOlhuExePgcxfMRf98XwAWOF2pqkJTFTc2z0=
+golang.org/x/tools v0.0.0-20200501205727-542909fd9944/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=