Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/go-kit/kit/metrics/discard/discard.go

@@ -0,0 +1,40 @@
+// Package discard provides a no-op metrics backend.
+package discard
+
+import "github.com/go-kit/kit/metrics"
+
+type counter struct{}
+
+// NewCounter returns a new no-op counter.
+func NewCounter() metrics.Counter { return counter{} }
+
+// With implements Counter.
+func (c counter) With(labelValues ...string) metrics.Counter { return c }
+
+// Add implements Counter.
+func (c counter) Add(delta float64) {}
+
+type gauge struct{}
+
+// NewGauge returns a new no-op gauge.
+func NewGauge() metrics.Gauge { return gauge{} }
+
+// With implements Gauge.
+func (g gauge) With(labelValues ...string) metrics.Gauge { return g }
+
+// Set implements Gauge.
+func (g gauge) Set(value float64) {}
+
+// Add implements metrics.Gauge.
+func (g gauge) Add(delta float64) {}
+
+type histogram struct{}
+
+// NewHistogram returns a new no-op histogram.
+func NewHistogram() metrics.Histogram { return histogram{} }
+
+// With implements Histogram.
+func (h histogram) With(labelValues ...string) metrics.Histogram { return h }
+
+// Observe implements histogram.
+func (h histogram) Observe(value float64) {}