Fix URLSearchParams to use the right encoding algorithm

third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html

Index: third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html
diff --git a/third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html b/third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html
index 495a1ac37d774972f5e627543799f885f79026c9..e0b7d5efa73a7b6b2fb72992111b37620276e0d5 100644
--- a/third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html
+++ b/third_party/WebKit/LayoutTests/fast/domurl/urlsearchparams-stringifier.html
@@ -96,15 +96,34 @@ function urlEncodedSerialize(n) {
 for (var i = 0x00; i < 0xFF; i++) {
     // Not all bytes can appear in valid UTF-8, so some bytes aren't covered.
     // TODO(mkwst): We fail to properly encode a few bytes: https://crbug.com/557063
+    var expected = urlEncodedSerialize(i);
     test(function() {
         var params = new URLSearchParams();
         params.append('' + i, String.fromCodePoint(i));
-        assert_equals(params + '', '' + i + '=' + urlEncodedSerialize(i));
-    }, "Serialize U+00" + intToHex(i) + " -> '" + String.fromCodePoint(i) + "'");
+        assert_equals(params + '', '' + i + '=' + expected);
+    }, "Serialize U+00" + intToHex(i) + " -> '" + expected + "'");
 }
 
 test(function() {
     var params = new URLSearchParams();
+    params.append('a', '\r');
+    assert_equals(params + '', 'a=%0D');
+}, 'Serialize \\r');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', '\n');
+    assert_equals(params + '', 'a=%0A');
+}, 'Serialize \\n');
+
+test(function() {
+    var params = new URLSearchParams();
+    params.append('a', '\r\n');
+    assert_equals(params + '', 'a=%0D%0A');
+}, 'Serialize \\r\\n');
+
+test(function() {
+    var params = new URLSearchParams();
     params.append('a', 'b%c');
     assert_equals(params + '', 'a=b%25c');
     params.delete('a');
@@ -143,4 +162,3 @@ test(function() {
 </script>
 </head>
 </html>
-