Revert "Re-land "[vm] Add type to _AsyncAwaitCompleter.start."" This reverts commit 4049ab54e424a8ae968fb658bf90c69776e2a721. Reason for revert: Appears to break standalone_2/dwarf_stack_trace_test and other related tests. https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket.appspot.com/8886276259895791440/+/steps/test_results/0/logs/new_test_failures__logs_/0 Original change's description: > Re-land "[vm] Add type to _AsyncAwaitCompleter.start." > > We need to relax vm/dart/causal_stacks/async_throws_stack_no_causal_test > > Change-Id: I40c08d432afeac839ce4f49bbf48c3707b23ef7f > Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138804 > Reviewed-by: Martin Kustermann <kustermann@google.com> > Commit-Queue: Samir Jindel <sjindel@google.com> TBR=kustermann@google.com,sjindel@google.com,cskau@google.com Change-Id: Ib77bdb5ba9927cf5a9a588570a5d70641e912aed No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138791 Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Ben Konyi <bkonyi@google.com>
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