Update go2ts to v1.3.4.

Change-Id: I658fc7e9c241caa7358b14366c1b61dabc186678
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/303176
Commit-Queue: Leandro Lovisolo <lovisolo@google.com>
Auto-Submit: Leandro Lovisolo <lovisolo@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
diff --git a/go.mod b/go.mod
index 9410a05..da1b502 100644
--- a/go.mod
+++ b/go.mod
@@ -112,7 +112,7 @@
 	github.com/russross/blackfriday/v2 v2.0.1
 	github.com/sergi/go-diff v1.1.0 // indirect
 	github.com/skia-dev/go-systemd v0.0.0-20181025131956-1cc903e82ae4
-	github.com/skia-dev/go2ts v1.3.3
+	github.com/skia-dev/go2ts v1.3.4
 	github.com/skia-dev/google-api-go-client v0.10.1-0.20200109184256-16c3d6f408b2
 	github.com/spf13/afero v1.3.1 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
diff --git a/go.sum b/go.sum
index 9d269ac..e6a124c 100644
--- a/go.sum
+++ b/go.sum
@@ -817,6 +817,8 @@
 github.com/skia-dev/go2ts v1.3.2/go.mod h1:pE59J8wf5IHSMtPhH8PmWq5ZTLt6p1Ih+4ODd9fkGXk=
 github.com/skia-dev/go2ts v1.3.3 h1:JxDU10XTMjGN4K+8GelY2dMnhprCz1GPRnONxE7LONQ=
 github.com/skia-dev/go2ts v1.3.3/go.mod h1:pE59J8wf5IHSMtPhH8PmWq5ZTLt6p1Ih+4ODd9fkGXk=
+github.com/skia-dev/go2ts v1.3.4 h1:xlgs+2aM2APE5U2NP+OFByIZzZooPKir+iVpIHD5CD0=
+github.com/skia-dev/go2ts v1.3.4/go.mod h1:pE59J8wf5IHSMtPhH8PmWq5ZTLt6p1Ih+4ODd9fkGXk=
 github.com/skia-dev/google-api-go-client v0.10.1-0.20200109184256-16c3d6f408b2 h1:Id5JdSD66PKQQiiVFG1VXDVCT5U3DcDzJSReXRxKRLk=
 github.com/skia-dev/google-api-go-client v0.10.1-0.20200109184256-16c3d6f408b2/go.mod h1:N0iTzjbw95ZVfOL7wVngmVXE2kG0NP+LYlq3QMwf9Qo=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
diff --git a/golden/modules/rpc_types.ts b/golden/modules/rpc_types.ts
index 775f11e..76b8de2 100644
--- a/golden/modules/rpc_types.ts
+++ b/golden/modules/rpc_types.ts
@@ -54,16 +54,12 @@
 	total_digests: number;
 }
 
-export interface DiffMetrics {
-	numDiffPixels: number;
-	pixelDiffPercent: number;
-	maxRGBADiffs: number[];
-	dimDiffer: boolean;
-	diffs: { [key: string]: number };
-}
-
 export interface SRDiffDigest {
-	DiffMetrics: DiffMetrics | null;
+	numDiffPixels?: number;
+	pixelDiffPercent?: number;
+	maxRGBADiffs?: number[];
+	dimDiffer?: boolean;
+	diffs?: { [key: string]: number };
 	digest: Digest;
 	status: string;
 	paramset: ParamSet;