cmd/vendor/github.com/google/pprof: refresh from upstream

Update vendored pprof to commit 4fc39a00b6b8c1aad05260f01429ec70e127252c
from github.com/google/pprof (2017-11-01).

Fixes #19380
Updates #21047

Change-Id: Ib64a94a45209039e5945acbcfa0392790c8ee41e
Reviewed-on: https://go-review.googlesource.com/57370
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/cmd/vendor/github.com/google/pprof/driver/driver.go b/src/cmd/vendor/github.com/google/pprof/driver/driver.go
index d01d0fa344..ee7d67d784 100644
--- a/src/cmd/vendor/github.com/google/pprof/driver/driver.go
+++ b/src/cmd/vendor/github.com/google/pprof/driver/driver.go
@@ -29,10 +29,10 @@ import (
 // manager. Then it generates a report formatted according to the
 // options selected through the flags package.
 func PProf(o *Options) error {
-	return internaldriver.PProf(o.InternalOptions())
+	return internaldriver.PProf(o.internalOptions())
 }
 
-func (o *Options) InternalOptions() *plugin.Options {
+func (o *Options) internalOptions() *plugin.Options {
 	var obj plugin.ObjTool
 	if o.Obj != nil {
 		obj = &internalObjTool{o.Obj}
@@ -273,9 +273,9 @@ type internalSymbolizer struct {
 }
 
 func (s *internalSymbolizer) Symbolize(mode string, srcs plugin.MappingSources, prof *profile.Profile) error {
-	isrcs := plugin.MappingSources{}
+	isrcs := MappingSources{}
 	for m, s := range srcs {
 		isrcs[m] = s
 	}
-	return s.Symbolize(mode, isrcs, prof)
+	return s.Symbolizer.Symbolize(mode, isrcs, prof)
 }