Revert "[heap] Add marking summary counter"

This reverts commit e05913ff.

Reason for revert:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux64%20TSAN/23203

Original change's description:
> [heap] Add marking summary counter
> 
> Change-Id: I41e5c4a99331ddc844cd1fe86f63406a28eebdbf
> Reviewed-on: https://chromium-review.googlesource.com/c/1299243
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57005}

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

Change-Id: I0acfee50159527f496f752015b19e56eaf1c1600
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1299246Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57006}

src/heap/gc-tracer.cc

@@ -1134,41 +1134,13 @@ void GCTracer::RecordGCSumCounters(double atomic_pause_duration) {
       current_.incremental_marking_scopes[Scope::MC_INCREMENTAL_FINALIZE]
           .duration +
       atomic_pause_duration;
-  const double background_duration =
-      background_counter_[BackgroundScope::MC_BACKGROUND_EVACUATE_COPY]
-          .total_duration_ms +
-      background_counter_
-          [BackgroundScope::MC_BACKGROUND_EVACUATE_UPDATE_POINTERS]
-              .total_duration_ms +
-      background_counter_[BackgroundScope::MC_BACKGROUND_MARKING]
-          .total_duration_ms +
-      background_counter_[BackgroundScope::MC_BACKGROUND_SWEEPING]
-          .total_duration_ms;
-
-  const double marking_duration =
-      current_.incremental_marking_scopes[Scope::MC_INCREMENTAL_START]
-          .duration +
-      incremental_marking_duration_ +
-      current_.incremental_marking_scopes[Scope::MC_INCREMENTAL_FINALIZE]
-          .duration +
-      current_.scopes[Scope::MC_MARK];
-  const double marking_background_duration =
-      background_counter_[BackgroundScope::MC_BACKGROUND_MARKING]
-          .total_duration_ms;
-
-  // UMA.
   heap_->isolate()->counters()->gc_mark_compactor()->AddSample(
       static_cast<int>(overall_duration));
 
   // Emit trace event counters.
-  TRACE_EVENT_INSTANT2(TRACE_DISABLED_BY_DEFAULT("v8.gc"),
+  TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("v8.gc"),
                        "V8.GCMarkCompactorSummary", TRACE_EVENT_SCOPE_THREAD,
-                       "duration", overall_duration, "background_duration",
-                       background_duration);
-  TRACE_EVENT_INSTANT2(TRACE_DISABLED_BY_DEFAULT("v8.gc"),
-                       "V8.GCMarkCompactorMarkingSummary",
-                       TRACE_EVENT_SCOPE_THREAD, "duration", marking_duration,
-                       "background_duration", marking_background_duration);
+                       "duration", overall_duration);
 }
 
 }  // namespace internal