[sheriff] Disable flaky ProcessOutputWatcherTest.InvalidUTF8SeriesOfTrailingBytes test

Bug: 1399698
Change-Id: I7e9facac643c081f47b4147978568804788d9c9d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4091424
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Owners-Override: Keishi Hattori <keishi@chromium.org>
Reviewed-by: Takashi Sakamoto <tasak@google.com>
Commit-Queue: Keishi Hattori <keishi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1081293}

diff --git a/chromeos/process_proxy/process_output_watcher_unittest.cc b/chromeos/process_proxy/process_output_watcher_unittest.cc
index 4c9bad23..d9e62331 100644
--- a/chromeos/process_proxy/process_output_watcher_unittest.cc
+++ b/chromeos/process_proxy/process_output_watcher_unittest.cc

@@ -295,7 +295,8 @@
   RunTest(test_cases);
 }
 
-TEST_F(ProcessOutputWatcherTest, InvalidUTF8SeriesOfTrailingBytes) {
+// TODO(crbug.com/1399698): Re-enable this test
+TEST_F(ProcessOutputWatcherTest, DISABLED_InvalidUTF8SeriesOfTrailingBytes) {
   std::vector<TestCase> test_cases;
   test_cases.push_back(TestCase("\x82\x82\x82", false, "\x82\x82\x82"));
   test_cases.push_back(TestCase("\x82\x82\x82", false, "\x82\x82\x82"));