Introduce AnimationWorkletProxyClient and necessary plumbing to get it in worklet messaging proxy.

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

 // Copyright 2015 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/CompositorWorkerGlobalScope.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/workers/InProcessWorkerObjectProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "modules/EventTargetModules.h"
@@ skipping 29 matching lines @@
     std::unique_ptr<SecurityOrigin::PrivilegeData> starterOriginPrivilegeData,
     WorkerClients* workerClients)
     : WorkerGlobalScope(url,
                         userAgent,
                         thread,
                         timeOrigin,
                         std::move(starterOriginPrivilegeData),
                         workerClients),
       m_executingAnimationFrameCallbacks(false),
       m_callbackCollection(this) {
-  CompositorProxyClient::from(clients())->setGlobalScope(this);
+  CompositorWorkerProxyClient::from(clients())->setGlobalScope(this);
 }
 
 CompositorWorkerGlobalScope::~CompositorWorkerGlobalScope() {}
 
 void CompositorWorkerGlobalScope::dispose() {
   WorkerGlobalScope::dispose();
-  CompositorProxyClient::from(clients())->dispose();
+  CompositorWorkerProxyClient::from(clients())->dispose();
 }
 
 DEFINE_TRACE(CompositorWorkerGlobalScope) {
   visitor->trace(m_callbackCollection);
   WorkerGlobalScope::trace(visitor);
 }
 
 const AtomicString& CompositorWorkerGlobalScope::interfaceName() const {
   return EventTargetNames::CompositorWorkerGlobalScope;
 }
@@ skipping 10 matching lines @@
     return;
   workerObjectProxy().postMessageToWorkerObject(std::move(message),
                                                 std::move(channels));
 }
 
 int CompositorWorkerGlobalScope::requestAnimationFrame(
     FrameRequestCallback* callback) {
   const bool shouldSignal =
       !m_executingAnimationFrameCallbacks && m_callbackCollection.isEmpty();
   if (shouldSignal)
-    CompositorProxyClient::from(clients())->requestAnimationFrame();
+    CompositorWorkerProxyClient::from(clients())->requestAnimationFrame();
   return m_callbackCollection.registerCallback(callback);
 }
 
 void CompositorWorkerGlobalScope::cancelAnimationFrame(int id) {
   m_callbackCollection.cancelCallback(id);
 }
 
 bool CompositorWorkerGlobalScope::executeAnimationFrameCallbacks(
     double highResTimeMs) {
   AutoReset<bool> temporaryChange(&m_executingAnimationFrameCallbacks, true);
   m_callbackCollection.executeCallbacks(highResTimeMs, highResTimeMs);
   return !m_callbackCollection.isEmpty();
 }
 
 InProcessWorkerObjectProxy& CompositorWorkerGlobalScope::workerObjectProxy()
     const {
   return static_cast<CompositorWorkerThread*>(thread())->workerObjectProxy();
 }
 
 }  // namespace blink