milo: buildbucket builer view

common/clock/external.go

 // Copyright 2015 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package clock
 
 import (
         "time"
 
         "golang.org/x/net/context"
@@ skipping 42 matching lines @@
 // NewTimer calls Clock.NewTimer on the Clock instance stored in the supplied
 // Context.
 func NewTimer(ctx context.Context) Timer {
         return Get(ctx).NewTimer(ctx)
 }
 
 // After calls Clock.After on the Clock instance stored in the supplied Context.
 func After(ctx context.Context, d time.Duration) <-chan TimerResult {
         return Get(ctx).After(ctx, d)
 }
+
+// Since is an equivalent of time.Since.
+func Since(ctx context.Context, t time.Time) time.Duration {
+        return Now(ctx).Sub(t)
+}