chromium/src/third_party/blink/renderer/core/timing/worker_global_scope_performance.cc

/*
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#include "third_party/blink/renderer/core/timing/worker_global_scope_performance.h"

#include "third_party/blink/renderer/core/timing/worker_performance.h"
#include "third_party/blink/renderer/core/workers/worker_global_scope.h"

namespace blink {

WorkerGlobalScopePerformance::WorkerGlobalScopePerformance(
    WorkerGlobalScope& worker_global_scope)
    : Supplement<WorkerGlobalScope>(worker_global_scope) {}

const char WorkerGlobalScopePerformance::kSupplementName[] =
    "WorkerGlobalScopePerformance";

WorkerGlobalScopePerformance& WorkerGlobalScopePerformance::From(
    WorkerGlobalScope& worker_global_scope) {
  WorkerGlobalScopePerformance* supplement =
      Supplement<WorkerGlobalScope>::From<WorkerGlobalScopePerformance>(
          worker_global_scope);
  if (!supplement) {
    supplement =
        MakeGarbageCollected<WorkerGlobalScopePerformance>(worker_global_scope);
    ProvideTo(worker_global_scope, supplement);
  }
  return *supplement;
}

WorkerPerformance* WorkerGlobalScopePerformance::performance(
    WorkerGlobalScope& worker_global_scope) {
  return From(worker_global_scope).performance(&worker_global_scope);
}

WorkerPerformance* WorkerGlobalScopePerformance::performance(
    WorkerGlobalScope* worker_global_scope) {
  if (!performance_)
    performance_ = MakeGarbageCollected<WorkerPerformance>(worker_global_scope);
  return performance_.Get();
}

void WorkerGlobalScopePerformance::Trace(Visitor* visitor) const {
  visitor->Trace(performance_);
  Supplement<WorkerGlobalScope>::Trace(visitor);
}

}  // namespace blink