Replace ParseTraceState with ParseTraceStateString

trace/tracestate.go

@@ -95,17 +95,10 @@ type TraceState struct { //nolint:golint
 
 var _ json.Marshaler = TraceState{}
 
-// ParseTraceState attempts to decode a TraceState from the passed byte slice.
-// It returns an error if the input is invalid according to the W3C
-// tracecontext specification.
-func ParseTraceState(tracestate []byte) (TraceState, error) {
-	return ParseTraceStateString(string(tracestate))
-}
-
-// ParseTraceStateString attempts to decode a TraceState from the passed
+// ParseTraceState attempts to decode a TraceState from the passed
 // string. It returns an error if the input is invalid according to the W3C
 // tracecontext specification.
-func ParseTraceStateString(tracestate string) (TraceState, error) {
+func ParseTraceState(tracestate string) (TraceState, error) {
 	if tracestate == "" {
 		return TraceState{}, nil
 	}

trace/tracestate_test.go

@@ -267,9 +267,9 @@ var maxMembers = func() TraceState {
 	return TraceState{members: members}
 }()
 
-func TestParseTraceStateString(t *testing.T) {
+func TestParseTraceState(t *testing.T) {
 	for _, tc := range testcases {
-		got, err := ParseTraceState([]byte(tc.in))
+		got, err := ParseTraceState(tc.in)
 		assert.Equal(t, tc.tracestate, got)
 		if tc.err != nil {
 			assert.ErrorIs(t, err, tc.err, tc.in)