Make classes and structures in core/workers, core/timing and core/testing fast-allocated.

Source/core/timing/WorkerGlobalScopePerformance.h

Index: Source/core/timing/WorkerGlobalScopePerformance.h
diff --git a/Source/core/timing/WorkerGlobalScopePerformance.h b/Source/core/timing/WorkerGlobalScopePerformance.h
index e29ccd2d6a3d6b32abe3020495e3c38ec642e0d0..29dc26730ab54ff8690924b8f9adf0958fbe8918 100644
--- a/Source/core/timing/WorkerGlobalScopePerformance.h
+++ b/Source/core/timing/WorkerGlobalScopePerformance.h
@@ -41,6 +41,7 @@ class WorkerGlobalScope;
 
 class WorkerGlobalScopePerformance final : public NoBaseWillBeGarbageCollected<WorkerGlobalScopePerformance>, public WillBeHeapSupplement<WorkerGlobalScope> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(WorkerGlobalScopePerformance);
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(WorkerGlobalScopePerformance);
 public:
     static WorkerGlobalScopePerformance& from(WorkerGlobalScope&);