diff --git a/go.sum b/go.sum
index 8515b0e..f1879fa 100644
--- a/go.sum
+++ b/go.sum
@@ -65,6 +65,8 @@
 cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
 cloud.google.com/go/pubsub v1.4.0 h1:76oR7VBOkL7ivoIrFKyW0k7YDCRelrlxktIzQiIUGgg=
 cloud.google.com/go/pubsub v1.4.0/go.mod h1:LFrqilwgdw4X2cJS9ALgzYmMu+ULyrUN6IHV3CPK4TM=
+cloud.google.com/go/pubsub v1.5.0 h1:9cH52jizPUVSSrSe+J16RC9wB0QI7i/cfuCm5UUCcIk=
+cloud.google.com/go/pubsub v1.5.0/go.mod h1:ZEwJccE3z93Z2HWvstpri00jOg7oO4UZDtKhwDwqF0w=
 cloud.google.com/go/spanner v1.2.0/go.mod h1:LfwGAsK42Yz8IeLsd/oagGFBqTXt3xVWtm8/KD2vrEI=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 cloud.google.com/go/storage v1.5.0 h1:RPUcBvDeYgQFMfQu1eBMq6piD1SXmLH+vK3qjewZPus=
@@ -191,6 +193,8 @@
 github.com/aws/aws-sdk-go v1.32.13/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/aws/aws-sdk-go v1.33.1 h1:yz9XmNzPshz/lhfAZvLfMnIS9HPo8+boGRcWqDVX+T0=
 github.com/aws/aws-sdk-go v1.33.1/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
+github.com/aws/aws-sdk-go v1.33.2 h1:8TVrnPnSD7I+AmDp66xBUvS3K0J+jH09YXdrkJ34ey0=
+github.com/aws/aws-sdk-go v1.33.2/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -966,6 +970,8 @@
 go.chromium.org/luci v0.0.0-20200706010025-fa1f2bddad9a/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
 go.chromium.org/luci v0.0.0-20200707033358-8fb6a0ac9ee5 h1:P9lJR5u5PNQQcyL4g7LVDsr6rsqtsPzxzJJfnTBxaKM=
 go.chromium.org/luci v0.0.0-20200707033358-8fb6a0ac9ee5/go.mod h1:MIQewVTLvOvc0UioV0JNqTNO/RspKFS0XEeoKrOxsdM=
+go.chromium.org/luci v0.0.0-20200708090551-4d14b1192fec h1:N8OHdweRmM8C/ScbyKd8K1We8HQWG3Nm31naCvlsfeA=
+go.chromium.org/luci v0.0.0-20200708090551-4d14b1192fec/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=
@@ -1072,6 +1078,8 @@
 go.skia.org/infra v0.0.0-20200701232717-f65049e8d199/go.mod h1:31exDrG21U2Ipqt0Ao2zlJM/GEMS/0za5zovLSJH1c0=
 go.skia.org/infra v0.0.0-20200706211051-88e733d409bf h1:a8WuucYFZoZH56L9Vxb8sGTIYMfLzEjeaE29ZmG/QJM=
 go.skia.org/infra v0.0.0-20200706211051-88e733d409bf/go.mod h1:9X0Tt0jgyjgQ3GlJyjSUVoVahWlmQ4gCAI0Ba2ouh8w=
+go.skia.org/infra v0.0.0-20200708134745-fcce5bb3db4b h1:3McKLCugVU8pPzZbhu8E0iHkKkYhS5sb4wg5AAEQj0A=
+go.skia.org/infra v0.0.0-20200708134745-fcce5bb3db4b/go.mod h1:dNfsYphZk1yD3L700jW76XyiMwiPLq9ZJkJtAz5jkGU=
 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=
@@ -1111,6 +1119,8 @@
 golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200707235045-ab33eee955e0 h1:eIYIE7EC5/Wv5Kbz8bJPaq+TN3kq3W8S+LSm62vM0DY=
+golang.org/x/crypto v0.0.0-20200707235045-ab33eee955e0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -1497,6 +1507,8 @@
 golang.org/x/tools v0.0.0-20200702044944-0cc1aa72b347/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200706234117-b22de6825cf7 h1:JxpwOnW/RU5vsiwsDw3eqto/7ccehcv162Xma5/FHoI=
 golang.org/x/tools v0.0.0-20200706234117-b22de6825cf7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200708003708-134513de8882 h1:x4Two2lSwHxTqR+eal4lB4ydUnTvmDDpPQeL92ZHDgA=
+golang.org/x/tools v0.0.0-20200708003708-134513de8882/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 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=
@@ -1654,6 +1666,8 @@
 google.golang.org/genproto v0.0.0-20200702021140-07506425bd67/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200707001353-8e8330bf89df h1:HWF6nM8ruGdu1K8IXFR+i2oT3YP+iBfZzCbC9zUfcWo=
 google.golang.org/genproto v0.0.0-20200707001353-8e8330bf89df/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200708133552-18036109789b h1:gYoomKOmhJ9YGwv9D05xH6fNWcNBNrMvOuoysvYIVV4=
+google.golang.org/genproto v0.0.0-20200708133552-18036109789b/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU=