commit 029dc5666f102091950f645ef9023be7b32d4ba3
author Mike Wittman <wittman@chromium.org> Tue Jan 15 17:59:18 2019
committer Commit Bot <commit-bot@chromium.org> Tue Jan 15 17:59:18 2019
tree 8d5aefda1e575bab893c1dbd89a134442f8c5063
parent 9bd27cf64264b645d6793b3380be18921c87e217

Revert "[Sampling profiler] Record continued_work sample metadata for Windows"

This reverts commit 721cd487021616e86b84dab9ce27343ea65322e2.

Reason for revert: ThreadProfiler outlives the main MessageLoop in the GPU and renderer processes, resulting in UAFs accessing the work id in the former and access to a stale stack location in the latter.

Original change's description:
> [Sampling profiler] Record continued_work sample metadata for Windows
> 
> Records work ids along with samples to distinguish which samples came
> from which work items (i.e. tasks, user interface event handlers, etc.)
> This information will be used to infer coarse work item durations and
> from that information, jankiness.
> 
> Task id recording takes place while the thread is suspended so must
> be implemented in a lockless fashion.
> 
> The corresponding Mac implementation will be much more involved so is
> deferred to a future CL.
> 
> Bug: 851163
> Change-Id: I930773de320cb0ce02509c0dd222754722fac2bf
> Reviewed-on: https://chromium-review.googlesource.com/c/1372829
> Commit-Queue: Mike Wittman <wittman@chromium.org>
> Reviewed-by: François Doray <fdoray@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#622632}

TBR=wittman@chromium.org,fdoray@chromium.org

Change-Id: I586da93bec9ad34b37d1218df72a82654a16bb42
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 851163, 921952
Reviewed-on: https://chromium-review.googlesource.com/c/1412038
Reviewed-by: Mike Wittman <wittman@chromium.org>
Commit-Queue: Mike Wittman <wittman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622871}