chore: cherry-pick 913247c378d5 from chromium #23011
Merged
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Use SupportsWeakPtr for messaging from rendering thread to main thread
In cross-thread messaging, the associated execution context can be
already gone when a posted task is performed sometime later in the task
runner's queue.
By using WeakPtr, the task runner will not perform a scheduled task
in the queue when the target object is invalid.
Test: Locally confirmed that the repro does not crash.
Bug: 1057627
Change-Id: I51737594c918f6a4924c9a7ffe30db3e8de9a683
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2082897
Commit-Queue: Hongchan Choi hongchan@chromium.org
Reviewed-by: Raymond Toy rtoy@chromium.org
Cr-Commit-Position: refs/heads/master@{#746613}
Notes: Security: backported fix for CVE-2020-6429: Use after free in audio.