Disallow Atomics.wait in ServiceWorker, allow in SharedWorker

third_party/WebKit/Source/core/workers/WorkerThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.cpp b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
index 8966c10d921b29417784fb9969cec339b30ca480..81acaf6ec57e0f08d7743d83fd042bf60e5b2fd2 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
@@ -449,6 +449,9 @@ void WorkerThread::InitializeOnWorkerThread(
   bool heap_limit_increased_for_debugging =
       startup_data->worker_v8_settings_.heap_limit_mode_ ==
       WorkerV8Settings::HeapLimitMode::kIncreasedForDebugging;
+  bool allow_atomics_wait =
+      startup_data->worker_v8_settings_.atomics_wait_mode_ ==
+      WorkerV8Settings::AtomicsWaitMode::kAllow;
 
   {
     MutexLocker lock(thread_state_mutex_);
@@ -464,6 +467,8 @@ void WorkerThread::InitializeOnWorkerThread(
       GetIsolate()->IncreaseHeapLimitForDebugging();
     }
 
+    GetIsolate()->SetAllowAtomicsWait(allow_atomics_wait);
+
     console_message_storage_ = new ConsoleMessageStorage();
     global_scope_ = CreateWorkerGlobalScope(std::move(startup_data));
     worker_reporting_proxy_.DidCreateWorkerGlobalScope(GlobalScope());