Disable flaky test cases in kernel_timeout_internal_test.

PiperOrigin-RevId: 645054874
Change-Id: Ic4a820b47edfa71bd3e1f149d54f00ac3c1d16a6

absl/synchronization/internal/kernel_timeout_test.cc

@@ -58,7 +58,8 @@ constexpr absl::Duration kTimingBound = absl::Microseconds(250);
 
 using absl::synchronization_internal::KernelTimeout;
 
-TEST(KernelTimeout, FiniteTimes) {
+// TODO(b/348224897): re-enabled when the flakiness is fixed.
+TEST(KernelTimeout, DISABLED_FiniteTimes) {
   constexpr absl::Duration kDurationsToTest[] = {
     absl::ZeroDuration(),
     absl::Nanoseconds(1),
@@ -228,7 +229,8 @@ TEST(KernelTimeout, InfinitePast) {
   EXPECT_EQ(t.ToChronoDuration(), std::chrono::nanoseconds(0));
 }
 
-TEST(KernelTimeout, FiniteDurations) {
+// TODO(b/348224897): re-enabled when the flakiness is fixed.
+TEST(KernelTimeout, DISABLED_FiniteDurations) {
   constexpr absl::Duration kDurationsToTest[] = {
     absl::ZeroDuration(),
     absl::Nanoseconds(1),
@@ -274,7 +276,8 @@ TEST(KernelTimeout, FiniteDurations) {
   }
 }
 
-TEST(KernelTimeout, NegativeDurations) {
+// TODO(b/348224897): re-enabled when the flakiness is fixed.
+TEST(KernelTimeout, DISABLED_NegativeDurations) {
   constexpr absl::Duration kDurationsToTest[] = {
     -absl::ZeroDuration(),
     -absl::Nanoseconds(1),