Worklet: Move Worklet::Initialize() into ThreadedWorklet for cleanup

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/workers/ThreadedWorklet.h"
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
@@ skipping 49 matching lines @@
 
   GetWorkletGlobalScopeProxy()->EvaluateScript(source_code);
   resolver->Resolve();
 }
 
 void ThreadedWorklet::ContextDestroyed(ExecutionContext* execution_context) {
   DCHECK(IsMainThread());
   for (const auto& script_loader : loader_to_resolver_map_.Keys())
     script_loader->Cancel();
   loader_to_resolver_map_.clear();
+  if (IsInitialized())
+    GetWorkletGlobalScopeProxy()->TerminateWorkletGlobalScope();
   Worklet::ContextDestroyed(execution_context);
 }
 
 DEFINE_TRACE(ThreadedWorklet) {
   visitor->Trace(loader_to_resolver_map_);
   Worklet::Trace(visitor);
 }
 
 }  // namespace blink