Update godeps

vendor/github.com/prometheus/client_golang/prometheus/value.go

@@ -19,6 +19,7 @@ import (
 	"math"
 	"sort"
 	"sync/atomic"
+	"time"
 
 	dto "github.com/prometheus/client_model/go"
 
@@ -48,7 +49,7 @@ type value struct {
 	// operations.  http://golang.org/pkg/sync/atomic/#pkg-note-BUG
 	valBits uint64
 
-	SelfCollector
+	selfCollector
 
 	desc       *Desc
 	valType    ValueType
@@ -68,7 +69,7 @@ func newValue(desc *Desc, valueType ValueType, val float64, labelValues ...strin
 		valBits:    math.Float64bits(val),
 		labelPairs: makeLabelPairs(desc, labelValues),
 	}
-	result.Init(result)
+	result.init(result)
 	return result
 }
 
@@ -80,6 +81,10 @@ func (v *value) Set(val float64) {
 	atomic.StoreUint64(&v.valBits, math.Float64bits(val))
 }
 
+func (v *value) SetToCurrentTime() {
+	v.Set(float64(time.Now().UnixNano()) / 1e9)
+}
+
 func (v *value) Inc() {
 	v.Add(1)
 }
@@ -113,7 +118,7 @@ func (v *value) Write(out *dto.Metric) error {
 // library to back the implementations of CounterFunc, GaugeFunc, and
 // UntypedFunc.
 type valueFunc struct {
-	SelfCollector
+	selfCollector
 
 	desc       *Desc
 	valType    ValueType
@@ -134,7 +139,7 @@ func newValueFunc(desc *Desc, valueType ValueType, function func() float64) *val
 		function:   function,
 		labelPairs: makeLabelPairs(desc, nil),
 	}
-	result.Init(result)
+	result.init(result)
 	return result
 }