New Sequence/Thread checking API.

PRESUBMIT.py

Index: PRESUBMIT.py
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 2bb70364529d86ea084fe9119449e4475bcd85bd..264083494f95b24afa1338ba5f539882ee788795 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -329,6 +329,30 @@ _BANNED_CPP_FUNCTIONS = (
       True,
       (),
     ),
+    (
+      'base::NonThreadSafe',
+      (
+        'base::NonThreadSafe is deprecated.',
+      ),
+      True,
+      (),
+    ),
+    (
+      'base::SequenceChecker',
+      (
+        'Consider using SEQUENCE_CHECKER macros instead of the class directly.',
+      ),
+      False,
+      (),
+    ),
+    (
+      'base::ThreadChecker',
+      (
+        'Consider using THREAD_CHECKER macros instead of the class directly.',
+      ),
+      False,
+      (),
+    ),
 )