Steps to reproduce

When RasterThreadMerger::MergeWithLease is called right after fml::TaskRunner::RunNowOrPostTask and before latch.Wait, the platform thread will be blocked by deadlock.
I found a closed issue of ios: #94524. This issue was fixed by rendering platform views without merging the raster thread on ios platform. Is there any plan to fix this issue on android or other platforms?

Expected results

I have an idea:
Provide a function TaskRunner::RunSyncTask. In this function, mark blocked_queue_id = MessageLoop::GetCurrentTaskQueueId(). In DelayedTask, add a filed blocked_queue_id_. Tasks with blocked_queue_id_ have the highest priority. In MessageLoopTaskQueues::Merge, flush all bloking DelayedTasks of subsumed task queue.

Actual results

PlatformThread Deadlock

Code sample

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