ACCESS_ON is an alias of GUARDED_BY but should take thread-like object instead of mutex,
RUN_ON is an alias of EXCLUSIVE_LOCKS_REQUIRED to annotate function always run on same
thread/task_queue
RTC_DCHECK_RUN_ON - creates an object that allows use of annotated variables and functions, and adds a run-time DCHECK given thread/queue is current.
R=tommi@webrtc.org
Review-Url: https://codereview.webrtc.org/1981893002
Cr-Commit-Position: refs/heads/master@{#12812}
We must remove dependency on Chromium, i.e. we can't use Chromium's base/logging.h. That means we need to define these macros in WebRTC also when doing Chromium builds. And this causes redefinition.
Alternative solutions:
* Check if we already have defined e.g. CHECK, and don't define them in that case. This makes us depend on include order in Chromium, which is not acceptable.
* Don't allow using the macros in WebRTC headers. Error prone since if someone adds it there by mistake it may compile fine, but later break if a header in added or order is changed in Chromium. That will be confusing and hard to enforce.
* Ensure that headers that are included by an embedder don't include our macros. This would require some heavy refactoring to be maintainable and enforcable.
* Changes in Chromium for this is obviously not an option.
BUG=chromium:468375
NOTRY=true
Review URL: https://codereview.webrtc.org/1335923002
Cr-Commit-Position: refs/heads/master@{#9964}
