Create manager to track OffscreenCanvasSurfaceImpl instances

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
index 9366ebfe73b95b24ce071896b444d2144c4c7587..650aff0f764455e5ae227944669cf1b7757885d3 100644
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp
@@ -1349,14 +1349,14 @@ String HTMLCanvasElement::getIdFromControl(const Element* element) {
   return String();
 }
 
-bool HTMLCanvasElement::createSurfaceLayer() {
+bool HTMLCanvasElement::createSurfaceLayer(int canvasId) {
   DCHECK(!m_surfaceLayerBridge);
   mojom::blink::OffscreenCanvasSurfacePtr service;
   Platform::current()->interfaceProvider()->getInterface(
       mojo::GetProxy(&service));
   m_surfaceLayerBridge =
       wrapUnique(new CanvasSurfaceLayerBridge(std::move(service)));
-  return m_surfaceLayerBridge->createSurfaceLayer(this->width(),
+  return m_surfaceLayerBridge->createSurfaceLayer(canvasId, this->width(),
                                                   this->height());
 }