Worklet: Introduce "pending tasks struct" concept defined in the Worklet spec

third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h

 // Copyright 2016 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.
 
 #ifndef MainThreadWorkletGlobalScope_h
 #define MainThreadWorkletGlobalScope_h
 
 #include "core/CoreExport.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/loader/WorkletScriptLoader.h"
 #include "core/workers/WorkletGlobalScope.h"
 #include "core/workers/WorkletGlobalScopeProxy.h"
-#include "core/workers/WorkletObjectProxy.h"
+#include "core/workers/WorkletPendingTasks.h"
 
 namespace blink {
 
 class ConsoleMessage;
 class LocalFrame;
 class ScriptSourceCode;
 
 class CORE_EXPORT MainThreadWorkletGlobalScope
     : public WorkletGlobalScope,
       public WorkletGlobalScopeProxy,
       public WorkletScriptLoader::Client,
       public ContextClient {
   USING_GARBAGE_COLLECTED_MIXIN(MainThreadWorkletGlobalScope);
 
  public:
   MainThreadWorkletGlobalScope(LocalFrame*,
                                const KURL&,
                                const String& user_agent,
                                PassRefPtr<SecurityOrigin>,
-                               v8::Isolate*,
-                               WorkletObjectProxy*);
+                               v8::Isolate*);
   ~MainThreadWorkletGlobalScope() override;
   bool IsMainThreadWorkletGlobalScope() const final { return true; }
 
   // WorkerOrWorkletGlobalScope
   void CountFeature(UseCounter::Feature) final;
   void CountDeprecation(UseCounter::Feature) final;
   WorkerThread* GetThread() const final;
 
   // WorkletGlobalScopeProxy
-  void FetchAndInvokeScript(int32_t request_id, const KURL& script_url) final;
+  void FetchAndInvokeScript(const KURL& module_url_record,
+                            WorkletPendingTasks*) final;
   void EvaluateScript(const ScriptSourceCode&) final;
   void TerminateWorkletGlobalScope() final;
 
   // WorkletScriptLoader::Client
   void NotifyWorkletScriptLoadingFinished(WorkletScriptLoader*,
                                           const ScriptSourceCode&) final;
 
   // ExecutionContext
   void AddConsoleMessage(ConsoleMessage*) final;
   void ExceptionThrown(ErrorEvent*) final;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  HeapHashSet<Member<WorkletScriptLoader>> loader_set_;
-
-  Member<WorkletObjectProxy> object_proxy_;
+  HeapHashMap<Member<WorkletScriptLoader>, Member<WorkletPendingTasks>>
+      loader_map_;
 };
 
 DEFINE_TYPE_CASTS(MainThreadWorkletGlobalScope,
                   ExecutionContext,
                   context,
                   context->IsMainThreadWorkletGlobalScope(),
                   context.IsMainThreadWorkletGlobalScope());
 
 }  // namespace blink
 
 #endif  // MainThreadWorkletGlobalScope_h