html: don't adjust xml:base

Change-Id: Ifac8571bedbb153b7e97ce2d2af47b5bc05b381c
Reviewed-on: https://go-review.googlesource.com/c/net/+/781893
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Nicholas Husin <nsh@golang.org>
Reviewed-by: Nicholas Husin <husin@google.com>

html/foreign.go

diff --git a/html/foreign.go b/html/foreign.go
index e8515d8..65d01d1 100644
--- a/html/foreign.go
+++ b/html/foreign.go
@@ -23,7 +23,7 @@
 		}
 		switch a.Key {
 		case "xlink:actuate", "xlink:arcrole", "xlink:href", "xlink:role", "xlink:show",
-			"xlink:title", "xlink:type", "xml:base", "xml:lang", "xml:space", "xmlns:xlink":
+			"xlink:title", "xlink:type", "xml:lang", "xml:space", "xmlns:xlink":
 			j := strings.Index(a.Key, ":")
 			aa[i].Namespace = a.Key[:j]
 			aa[i].Key = a.Key[j+1:]

html/parse_test.go

diff --git a/html/parse_test.go b/html/parse_test.go
index 4dad767..8f2b49b 100644
--- a/html/parse_test.go
+++ b/html/parse_test.go
@@ -152,9 +152,6 @@
 }
 
 func (a sortedAttributes) Less(i, j int) bool {
-	if a[i].Namespace != a[j].Namespace {
-		return a[i].Namespace < a[j].Namespace
-	}
 	return a[i].Key < a[j].Key
 }
 
@@ -245,10 +242,6 @@
 var testDataDirs = []string{"testdata/html5lib-tests/tree-construction/", "testdata/go/"}
 
 func TestParser(t *testing.T) {
-	skipTests := map[string]bool{
-		"testdata/html5lib-tests/tree-construction/webkit02.dat/22": true, // xml attribute sort & replace
-	}
-
 	for _, testDataDir := range testDataDirs {
 		testFiles, err := filepath.Glob(testDataDir + "*.dat")
 		if err != nil {
@@ -276,10 +269,6 @@
 
 				testId := fmt.Sprintf("%s/%d", strings.ReplaceAll(tf, string(os.PathSeparator), "/"), i)
 				t.Run(testId, func(t *testing.T) {
-					if skipTests[testId] {
-						t.Skip("Skipping known broken test")
-					}
-
 					err = testParseCase(ta.text, ta.want, ta.context, ParseOptionEnableScripting(ta.scripting))
 					if err != nil {
 						t.Errorf("%s test #%d %q, %s", tf, i, ta.text, err)