chore: bump chromium to a264339194bfa02f5ecb3b8cba449 (master) (#27111)

Co-authored-by: Shelley Vohr <shelley.vohr@gmail.com>
Co-authored-by: John Kleinschmidt <jkleinsc@electronjs.org>

patches/node/.patches

@@ -30,3 +30,4 @@ src_allow_embedders_to_provide_a_custom_pageallocator_to.patch
 allow_preventing_preparestacktracecallback.patch
 fix_add_safeforterminationscopes_for_sigint_interruptions.patch
 remove_makeexternal_case_for_uncached_internal_strings.patch
+fix_remove_outdated_--experimental-wasm-bigint_flag.patch

patches/node/fix_remove_outdated_--experimental-wasm-bigint_flag.patch

@@ -0,0 +1,67 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shelley Vohr <shelley.vohr@gmail.com>
+Date: Tue, 12 Jan 2021 09:17:14 -0800
+Subject: fix: remove outdated --experimental-wasm-bigint flag
+
+The --experimental-wasm-bigint flag was removed in https://chromium-review.googlesource.com/c/v8/v8/+/2610965
+but not yet from Node v14, as its version of V8 is not recent enough.
+
+This patch can be removed as soon as we upgrade Node.js to a version of
+V8 which contains the above CL.
+
+diff --git a/test/wasi/test-return-on-exit.js b/test/wasi/test-return-on-exit.js
+index 3f5d40c9ba7fb864767e9ac6c4b9a9f466d687e7..362d13b490a96f16029ba7edc0cda14db0feaab6 100644
+--- a/test/wasi/test-return-on-exit.js
++++ b/test/wasi/test-return-on-exit.js
+@@ -1,4 +1,4 @@
+-// Flags: --experimental-wasi-unstable-preview1 --experimental-wasm-bigint
++// Flags: --experimental-wasi-unstable-preview1
+ 'use strict';
+ const common = require('../common');
+ const assert = require('assert');
+diff --git a/test/wasi/test-wasi-not-started.js b/test/wasi/test-wasi-not-started.js
+index ad13e6d711802b029c4b536f2ed8944484d821cf..14c8cdfddf2f5cc7c8219cc7810bbdcb56482905 100644
+--- a/test/wasi/test-wasi-not-started.js
++++ b/test/wasi/test-wasi-not-started.js
+@@ -29,7 +29,6 @@ if (process.argv[2] === 'wasi-child') {
+ 
+   const child = cp.spawnSync(process.execPath, [
+     '--experimental-wasi-unstable-preview1',
+-    '--experimental-wasm-bigint',
+     __filename,
+     'wasi-child'
+   ], {
+diff --git a/test/wasi/test-wasi-stdio.js b/test/wasi/test-wasi-stdio.js
+index 4abe3c1ad8ae0d7af7b57040fdc4b146931a2b15..647990064efb438e36b0c5ec9a3480338d09b2f9 100644
+--- a/test/wasi/test-wasi-stdio.js
++++ b/test/wasi/test-wasi-stdio.js
+@@ -1,4 +1,4 @@
+-// Flags: --experimental-wasi-unstable-preview1 --experimental-wasm-bigint
++// Flags: --experimental-wasi-unstable-preview1
+ 'use strict';
+ require('../common');
+ const tmpdir = require('../common/tmpdir');
+diff --git a/test/wasi/test-wasi-symlinks.js b/test/wasi/test-wasi-symlinks.js
+index d1ec796125cb532e95e27562620312fdae40fac3..f619a8a2439a7d0c8624ffb31f1a83b87a9ad5ba 100644
+--- a/test/wasi/test-wasi-symlinks.js
++++ b/test/wasi/test-wasi-symlinks.js
+@@ -62,7 +62,6 @@ if (process.argv[2] === 'wasi-child') {
+     const opts = { env: { ...process.env, NODE_DEBUG_NATIVE: 'wasi' } };
+     const child = cp.spawnSync(process.execPath, [
+       '--experimental-wasi-unstable-preview1',
+-      '--experimental-wasm-bigint',
+       __filename,
+       'wasi-child',
+       options.test,
+diff --git a/test/wasi/test-wasi.js b/test/wasi/test-wasi.js
+index b4c404e515cbb2a54eac4fd52eb92d8535b577d9..85543255b2ddf8f8ebd7f7893ea0fe0c60513b22 100644
+--- a/test/wasi/test-wasi.js
++++ b/test/wasi/test-wasi.js
+@@ -51,7 +51,6 @@ if (process.argv[2] === 'wasi-child') {
+ 
+     const child = cp.spawnSync(process.execPath, [
+       '--experimental-wasi-unstable-preview1',
+-      '--experimental-wasm-bigint',
+       __filename,
+       'wasi-child',
+       options.test