Moves macros ACCESS_ON/RUN_ON from thread_annotations to thread_checker

webrtc/base/thread_checker.h

Index: webrtc/base/thread_checker.h
diff --git a/webrtc/base/thread_checker.h b/webrtc/base/thread_checker.h
index 265b2affcb7e15907ab4fce2167e1e73876cb7b5..3ae6e2c9f7f67514fddd3124bf3fc98b491c4226 100644
--- a/webrtc/base/thread_checker.h
+++ b/webrtc/base/thread_checker.h
@@ -173,6 +173,13 @@ class SCOPED_LOCKABLE AnnounceOnThread {
 //   rtc::scoped_ref_ptr<Encoder> encoder_;
 // }
 
+// Document if a variable/field is not shared and should be accessed from
+// same thread/task queue.
+#define ACCESS_ON(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+// Document if a function expected to be called from same thread/task queue.
+#define RUN_ON(x) THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(x))
+
 #define RTC_DCHECK_RUN_ON(thread_like_object) \
   rtc::internal::AnnounceOnThread thread_announcer(thread_like_object); \
   RTC_DCHECK(rtc::internal::AnnounceOnThread::IsCurrent(thread_like_object))