CC Animation: Unify ElementId in Blink Compositor Worker.

cc/blink/web_layer_impl.cc

 // Copyright 2014 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 "cc/blink/web_layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 361 matching lines @@
 }
 
 const cc::Layer* WebLayerImpl::ccLayer() const {
   return layer_.get();
 }
 
 cc::Layer* WebLayerImpl::ccLayer() {
   return layer_.get();
 }
 
-void WebLayerImpl::setElementId(uint64_t id) {
+void WebLayerImpl::setElementId(cc::ElementId id) {
   layer_->SetElementId(id);
 }
 
-uint64_t WebLayerImpl::elementId() const {
+cc::ElementId WebLayerImpl::elementId() const {
   return layer_->element_id();
 }
 
 void WebLayerImpl::setCompositorMutableProperties(uint32_t properties) {
   layer_->SetMutableProperties(properties);
 }
 
 uint32_t WebLayerImpl::compositorMutableProperties() const {
   return layer_->mutable_properties();
 }
@@ skipping 14 matching lines @@
 
 Layer* WebLayerImpl::layer() const {
   return layer_.get();
 }
 
 void WebLayerImpl::SetContentsOpaqueIsFixed(bool fixed) {
   contents_opaque_is_fixed_ = fixed;
 }
 
 }  // namespace cc_blink