diff --git a/base/observer_list_unittest.cc b/base/observer_list_unittest.cc
index 1470b90..50d7e7e 100644
--- a/base/observer_list_unittest.cc
+++ b/base/observer_list_unittest.cc
@@ -17,9 +17,11 @@
 #include "base/run_loop.h"
 #include "base/sequenced_task_runner.h"
 #include "base/single_thread_task_runner.h"
+#include "base/strings/string_piece.h"
 #include "base/synchronization/waitable_event.h"
-#include "base/task_scheduler/post_task.h"
-#include "base/task_scheduler/task_scheduler.h"
+// TaskScheduler not supported in libchrome
+// #include "base/task_scheduler/post_task.h"
+// #include "base/task_scheduler/task_scheduler.h"
 #include "base/test/gtest_util.h"
 #include "base/test/scoped_task_environment.h"
 #include "base/threading/platform_thread.h"
@@ -690,6 +692,8 @@ class SequenceVerificationObserver : public Foo {
 }  // namespace
 
 // Verify that observers are notified on the correct sequence.
+// TaskScheduler not supported in libchrome
+#if 0
 TEST(ObserverListThreadSafeTest, NotificationOnValidSequence) {
   test::ScopedTaskEnvironment scoped_task_environment;
 
@@ -717,9 +721,12 @@ TEST(ObserverListThreadSafeTest, NotificationOnValidSequence) {
   EXPECT_TRUE(observer_1.called_on_valid_sequence());
   EXPECT_TRUE(observer_2.called_on_valid_sequence());
 }
+#endif
 
 // Verify that when an observer is added to a NOTIFY_ALL ObserverListThreadSafe
 // from a notification, it is itself notified.
+// TaskScheduler not supported in libchrome
+#if 0
 TEST(ObserverListThreadSafeTest, AddObserverFromNotificationNotifyAll) {
   test::ScopedTaskEnvironment scoped_task_environment;
   auto observer_list = MakeRefCounted<ObserverListThreadSafe<Foo>>();
@@ -737,6 +744,7 @@ TEST(ObserverListThreadSafeTest, AddObserverFromNotificationNotifyAll) {
 
   EXPECT_EQ(1, observer_added_from_notification.GetValue());
 }
+#endif
 
 namespace {
 
@@ -769,6 +777,8 @@ class RemoveWhileNotificationIsRunningObserver : public Foo {
 
 // Verify that there is no crash when an observer is removed while it is being
 // notified.
+// TaskScheduler not supported in libchrome
+#if 0
 TEST(ObserverListThreadSafeTest, RemoveWhileNotificationIsRunning) {
   auto observer_list = MakeRefCounted<ObserverListThreadSafe<Foo>>();
   RemoveWhileNotificationIsRunningObserver observer;
@@ -793,6 +803,7 @@ TEST(ObserverListThreadSafeTest, RemoveWhileNotificationIsRunning) {
 
   observer.Unblock();
 }
+#endif
 
 TEST(ObserverListTest, Existing) {
   ObserverList<Foo> observer_list(ObserverListPolicy::EXISTING_ONLY);