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

third_party/WebKit/Source/core/workers/MainThreadWorklet.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/MainThreadWorklet.h"
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
@@ skipping 28 matching lines @@
                                            "This frame is already detached"));
   }
 
   KURL script_url = GetExecutionContext()->CompleteURL(url);
   if (!script_url.IsValid()) {
     return ScriptPromise::RejectWithDOMException(
         script_state, DOMException::Create(
                           kSyntaxError, "'" + url + "' is not a valid URL."));
   }
 
-  if (!IsInitialized())
-    Initialize();
-
   int32_t request_id = GetNextRequestId();
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state);
   ScriptPromise promise = resolver->Promise();
   resolver_map_.Set(request_id, resolver);
   GetWorkletGlobalScopeProxy()->FetchAndInvokeScript(request_id, script_url);
   return promise;
 }
 
 void MainThreadWorklet::DidFetchAndInvokeScript(int32_t request_id,
                                                 bool success) {
   DCHECK(IsMainThread());
   ScriptPromiseResolver* resolver = resolver_map_.at(request_id);
   if (!resolver)
     return;
   resolver_map_.erase(request_id);
   if (!success) {
     resolver->Reject(DOMException::Create(kNetworkError));
     return;
   }
   resolver->Resolve();
 }
 
 void MainThreadWorklet::ContextDestroyed(ExecutionContext* execution_context) {
   DCHECK(IsMainThread());
   resolver_map_.clear();
+  GetWorkletGlobalScopeProxy()->TerminateWorkletGlobalScope();
   Worklet::ContextDestroyed(execution_context);
 }
 
 DEFINE_TRACE(MainThreadWorklet) {
   visitor->Trace(resolver_map_);
   Worklet::Trace(visitor);
 }
 
 }  // namespace blink