Adding upstream version 3.10.8.

Signed-off-by: Daniel Baumann <daniel@debian.org>

logger/context.go

@@ -0,0 +1,24 @@
+// Copyright Earl Warren <contact@earl-warren.org>
+// Copyright Loïc Dachary <loic@dachary.org>
+// SPDX-License-Identifier: MIT
+
+package logger
+
+import (
+	"context"
+)
+
+type key int
+
+const (
+	loggerKey key = iota + 1
+)
+
+func ContextSetLogger(ctx context.Context, value Interface) context.Context {
+	return context.WithValue(ctx, loggerKey, value)
+}
+
+func ContextGetLogger(ctx context.Context) Interface {
+	value, _ := ctx.Value(loggerKey).(Interface)
+	return value
+}