cmd/pprof: update vendored github.com/google/pprof

Pull in the latest published version of github.com/google/pprof
as part of the continuous process of keeping Go's dependencies
up to date. Done with:

go get github.com/google/pprof
go mod tidy
go mod vendor

For #36905.
Fixes #65741.

Change-Id: Ice7b085c03ff69be97929cbe47bfd91954907529
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/564636
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>

1 files changed, 0 insertions, 106 deletions

diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/flamegraph.go b/src/cmd/vendor/github.com/google/pprof/internal/driver/flamegraph.go
deleted file mode 100644
index fbeb765dbc..0000000000
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/flamegraph.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// Copyright 2017 Google Inc. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package driver
-
-import (
-	"encoding/json"
-	"html/template"
-	"net/http"
-	"strings"
-
-	"github.com/google/pprof/internal/graph"
-	"github.com/google/pprof/internal/measurement"
-	"github.com/google/pprof/internal/report"
-)
-
-type treeNode struct {
-	Name      string      `json:"n"`
-	FullName  string      `json:"f"`
-	Cum       int64       `json:"v"`
-	CumFormat string      `json:"l"`
-	Percent   string      `json:"p"`
-	Children  []*treeNode `json:"c"`
-}
-
-// flamegraph generates a web page containing a flamegraph.
-func (ui *webInterface) flamegraph(w http.ResponseWriter, req *http.Request) {
-	// Force the call tree so that the graph is a tree.
-	// Also do not trim the tree so that the flame graph contains all functions.
-	rpt, errList := ui.makeReport(w, req, []string{"svg"}, func(cfg *config) {
-		cfg.CallTree = true
-		cfg.Trim = false
-	})
-	if rpt == nil {
-		return // error already reported
-	}
-
-	// Generate dot graph.
-	g, config := report.GetDOT(rpt)
-	var nodes []*treeNode
-	nroots := 0
-	rootValue := int64(0)
-	nodeArr := []string{}
-	nodeMap := map[*graph.Node]*treeNode{}
-	// Make all nodes and the map, collect the roots.
-	for _, n := range g.Nodes {
-		v := n.CumValue()
-		fullName := n.Info.PrintableName()
-		node := &treeNode{
-			Name:      graph.ShortenFunctionName(fullName),
-			FullName:  fullName,
-			Cum:       v,
-			CumFormat: config.FormatValue(v),
-			Percent:   strings.TrimSpace(measurement.Percentage(v, config.Total)),
-		}
-		nodes = append(nodes, node)
-		if len(n.In) == 0 {
-			nodes[nroots], nodes[len(nodes)-1] = nodes[len(nodes)-1], nodes[nroots]
-			nroots++
-			rootValue += v
-		}
-		nodeMap[n] = node
-		// Get all node names into an array.
-		nodeArr = append(nodeArr, n.Info.Name)
-	}
-	// Populate the child links.
-	for _, n := range g.Nodes {
-		node := nodeMap[n]
-		for child := range n.Out {
-			node.Children = append(node.Children, nodeMap[child])
-		}
-	}
-
-	rootNode := &treeNode{
-		Name:      "root",
-		FullName:  "root",
-		Cum:       rootValue,
-		CumFormat: config.FormatValue(rootValue),
-		Percent:   strings.TrimSpace(measurement.Percentage(rootValue, config.Total)),
-		Children:  nodes[0:nroots],
-	}
-
-	// JSON marshalling flame graph
-	b, err := json.Marshal(rootNode)
-	if err != nil {
-		http.Error(w, "error serializing flame graph", http.StatusInternalServerError)
-		ui.options.UI.PrintErr(err)
-		return
-	}
-
-	ui.render(w, req, "flamegraph", rpt, errList, config.Labels, webArgs{
-		FlameGraph: template.JS(b),
-		Nodes:      nodeArr,
-	})
-}