[worklets] Introduce AnimationWorkletGlobalScope and ThreadedWorkletGlobalScope

third_party/WebKit/Source/modules/compositorworker/AnimationWorkletThread.cpp

 // 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.
 
 #include "modules/compositorworker/AnimationWorkletThread.h"
 
 #include "core/workers/WorkerThreadStartupData.h"
+#include "modules/compositorworker/AnimationWorkletGlobalScope.h"
 #include "platform/TraceEvent.h"
+#include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/PtrUtil.h"
 
 namespace blink {
 
 std::unique_ptr<AnimationWorkletThread> AnimationWorkletThread::create(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy)
 {
     TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("animation-worklet"), "AnimationWorkletThread::create");
     DCHECK(isMainThread());
     return wrapUnique(new AnimationWorkletThread(workerLoaderProxy, workerReportingProxy));
 }
 
 AnimationWorkletThread::AnimationWorkletThread(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy)
     : AbstractAnimationWorkletThread(workerLoaderProxy, workerReportingProxy)
 {
 }
 
 AnimationWorkletThread::~AnimationWorkletThread()
 {
 }
 
 WorkerOrWorkletGlobalScope* AnimationWorkletThread::createWorkerGlobalScope(std::unique_ptr<WorkerThreadStartupData> startupData)
 {
     TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("animation-worklet"), "AnimationWorkletThread::createWorkerGlobalScope");
-    // TODO(ikilpatrick): implement.
-    return nullptr;
+
+    RefPtr<SecurityOrigin> securityOrigin = SecurityOrigin::create(startupData->m_scriptURL);
+    if (startupData->m_starterOriginPrivilegeData)
+        securityOrigin->transferPrivilegesFrom(std::move(startupData->m_starterOriginPrivilegeData));
+
+    // TODO(ikilpatrick): The AnimationWorkletGlobalScope will need to store a
+    // WorkerClients object for using a CompositorProxyClient object.
+    return AnimationWorkletGlobalScope::create(startupData->m_scriptURL, startupData->m_userAgent, securityOrigin.release(), this->isolate(), this);
 }
 
 } // namespace blink