Regenerate all stuff.

client/flagpb/unmarshal_test.pb_test.go

Index: client/flagpb/unmarshal_test.pb_test.go
diff --git a/client/flagpb/unmarshal_test.pb_test.go b/client/flagpb/unmarshal_test.pb_test.go
index 52d3e19d8930b1e1f1b652524311d844ae99e55f..6b65509ca9a12a3125749db0639ac573580c4a63 100644
--- a/client/flagpb/unmarshal_test.pb_test.go
+++ b/client/flagpb/unmarshal_test.pb_test.go
@@ -1,6 +1,5 @@
-// Code generated by protoc-gen-go.
+// Code generated by protoc-gen-go. DO NOT EDIT.
 // source: github.com/luci/luci-go/client/flagpb/unmarshal_test.proto
-// DO NOT EDIT!
 
 /*
 Package flagpb is a generated protocol buffer package.
@@ -226,7 +225,7 @@ func init() {
 
 var fileDescriptor0 = []byte{
 	// 387 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x74, 0x92, 0x4f, 0xab, 0x9b, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x92, 0x4f, 0xab, 0x9b, 0x40,
 	0x14, 0xc5, 0x3b, 0xd7, 0x68, 0x93, 0x9b, 0x10, 0xc2, 0xb4, 0x50, 0x09, 0x2d, 0x88, 0x2b, 0x29,
 	0xad, 0x56, 0x43, 0xa1, 0xcd, 0xb2, 0x25, 0x8b, 0x2e, 0xdc, 0x4c, 0xa1, 0xcb, 0x16, 0x27, 0xd8,
 	0x64, 0x78, 0xfe, 0x09, 0xce, 0xf8, 0x20, 0x1f, 0xf2, 0x7d, 0xa7, 0xc7, 0x8c, 0x9a, 0xe7, 0x03,