diff --git a/third_party/WebKit/LayoutTests/external/WPT_BASE_MANIFEST.json b/third_party/WebKit/LayoutTests/external/WPT_BASE_MANIFEST.json
index 734c5908..824d59c 100644
--- a/third_party/WebKit/LayoutTests/external/WPT_BASE_MANIFEST.json
+++ b/third_party/WebKit/LayoutTests/external/WPT_BASE_MANIFEST.json
@@ -332293,7 +332293,7 @@
    "support"
   ],
   "fetch/data-urls/base64.any-expected.txt": [
-   "0bb0513580b24c0fc83ad3de8601e95fa4ecc3a9",
+   "72d8a21a4768b807b3bc494df1d01a78697d5bef",
    "support"
   ],
   "fetch/data-urls/base64.any.js": [
@@ -332301,7 +332301,7 @@
    "testharness"
   ],
   "fetch/data-urls/base64.any.worker-expected.txt": [
-   "0bb0513580b24c0fc83ad3de8601e95fa4ecc3a9",
+   "72d8a21a4768b807b3bc494df1d01a78697d5bef",
    "support"
   ],
   "fetch/data-urls/processing.any-expected.txt": [
@@ -332317,7 +332317,7 @@
    "support"
   ],
   "fetch/data-urls/resources/base64.json": [
-   "8079b52c59420f924df9dfb7d99d1ac49265a315",
+   "6d3d2983e6e3d8e91ec7dfcc1f0f16e1d78383b7",
    "support"
   ],
   "fetch/data-urls/resources/data-urls.json": [
diff --git a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any-expected.txt b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any-expected.txt
index 95e6460..34eb7944 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any-expected.txt
+++ b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any-expected.txt
@@ -1,5 +1,5 @@
 This is a testharness.js-based test.
-Found 78 tests; 74 PASS, 4 FAIL, 0 TIMEOUT, 0 NOTRUN.
+Found 79 tests; 75 PASS, 4 FAIL, 0 TIMEOUT, 0 NOTRUN.
 PASS Setup.
 PASS data: URL base64 handling: ""
 PASS data: URL base64 handling: "abcd"
@@ -51,6 +51,7 @@
 PASS data: URL base64 handling: "ab=c="
 PASS data: URL base64 handling: "abc=d"
 PASS data: URL base64 handling: "abc=d="
+PASS data: URL base64 handling: "ab\vcd"
 PASS data: URL base64 handling: "ab\tcd"
 PASS data: URL base64 handling: "ab\ncd"
 FAIL data: URL base64 handling: "ab\fcd" promise_test: Unhandled rejection with value: object "TypeError: Failed to fetch"
diff --git a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any.worker-expected.txt b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any.worker-expected.txt
index 95e6460..34eb7944 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any.worker-expected.txt
+++ b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/base64.any.worker-expected.txt
@@ -1,5 +1,5 @@
 This is a testharness.js-based test.
-Found 78 tests; 74 PASS, 4 FAIL, 0 TIMEOUT, 0 NOTRUN.
+Found 79 tests; 75 PASS, 4 FAIL, 0 TIMEOUT, 0 NOTRUN.
 PASS Setup.
 PASS data: URL base64 handling: ""
 PASS data: URL base64 handling: "abcd"
@@ -51,6 +51,7 @@
 PASS data: URL base64 handling: "ab=c="
 PASS data: URL base64 handling: "abc=d"
 PASS data: URL base64 handling: "abc=d="
+PASS data: URL base64 handling: "ab\vcd"
 PASS data: URL base64 handling: "ab\tcd"
 PASS data: URL base64 handling: "ab\ncd"
 FAIL data: URL base64 handling: "ab\fcd" promise_test: Unhandled rejection with value: object "TypeError: Failed to fetch"
diff --git a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/resources/base64.json b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/resources/base64.json
index 7de20b28..c4f79aa 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/resources/base64.json
+++ b/third_party/WebKit/LayoutTests/external/wpt/fetch/data-urls/resources/base64.json
@@ -49,6 +49,7 @@
   ["ab=c=", null],
   ["abc=d", null],
   ["abc=d=", null],
+  ["ab\u000Bcd", null],
   ["ab\tcd", [105, 183, 29]],
   ["ab\ncd", [105, 183, 29]],
   ["ab\fcd", [105, 183, 29]],