Revert "[heap] Perform more embedder tracing in incremental marking step"

This reverts commit 49de5875.

Reason for revert: breaks TSAN

Original change's description:
> [heap] Perform more embedder tracing in incremental marking step
> 
> This should fix GC latency regressions introduced in 4c6598.
> 
> Bug: chromium:926189, chromium:930844, chromium:930693,chromium:931629
> Change-Id: I81c91829badbeea82d6e44670d07794632869424
> Reviewed-on: https://chromium-review.googlesource.com/c/1477216
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59668}

TBR=ulan@chromium.org,mlippautz@chromium.org

Change-Id: Iac914fe695740558f0fac3ad0172f48114b57312
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:926189, chromium:930844, chromium:930693, chromium:931629
Reviewed-on: https://chromium-review.googlesource.com/c/1477277Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59671}

src/heap/incremental-marking.cc

@@ -996,16 +996,14 @@ StepResult IncrementalMarking::AdvanceWithDeadline(
   double remaining_time_in_ms = 0.0;
   StepResult result;
   do {
+    StepResult embedder_result = EmbedderStep(kStepSizeInMs / 2);
     StepResult v8_result =
         V8Step(kStepSizeInMs / 2, completion_action, step_origin);
-    remaining_time_in_ms =
-        deadline_in_ms - heap()->MonotonicallyIncreasingTimeInMs();
-    StepResult embedder_result =
-        EmbedderStep(Min(kStepSizeInMs, remaining_time_in_ms));
     result = CombineStepResults(v8_result, embedder_result);
     remaining_time_in_ms =
         deadline_in_ms - heap()->MonotonicallyIncreasingTimeInMs();
-  } while (remaining_time_in_ms >= kStepSizeInMs &&
+  } while (remaining_time_in_ms > kStepSizeInMs && !IsComplete() &&
+           !marking_worklist()->IsEmpty() &&
            result == StepResult::kMoreWorkRemaining);
   return result;
 }