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

third_party/WebKit/Source/web/WebViewFrameWidget.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 "web/WebViewFrameWidget.h"
 
 #include "web/WebInputMethodControllerImpl.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 
@@ skipping 197 matching lines @@
 
 WebInputMethodControllerImpl*
 WebViewFrameWidget::getActiveWebInputMethodController() const {
   return m_webView->getActiveWebInputMethodController();
 }
 
 void WebViewFrameWidget::scheduleAnimation() {
   m_webView->scheduleAnimationForWidget();
 }
 
-CompositorProxyClient* WebViewFrameWidget::createCompositorProxyClient() {
-  return m_webView->createCompositorProxyClient();
+CompositorProxyClient* WebViewFrameWidget::createCompositorProxyClient(
+    CompositorProxyClient::Type type) {
+  return m_webView->createCompositorProxyClient(type);
 }
 
 void WebViewFrameWidget::setRootGraphicsLayer(GraphicsLayer* layer) {
   m_webView->setRootGraphicsLayer(layer);
 }
 
 void WebViewFrameWidget::setRootLayer(WebLayer* layer) {
   m_webView->setRootLayer(layer);
 }
 
 WebLayerTreeView* WebViewFrameWidget::getLayerTreeView() const {
   return m_webView->layerTreeView();
 }
 
 CompositorAnimationHost* WebViewFrameWidget::animationHost() const {
   return m_webView->animationHost();
 }
 
 HitTestResult WebViewFrameWidget::coreHitTestResultAt(const WebPoint& point) {
   return m_webView->coreHitTestResultAt(point);
 }
 
 }  // namespace blink