Replaced cc::SurfaceId::nonce_ with base::UnguessableToken

third_party/WebKit/Source/modules/canvas/HTMLCanvasElementModule.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/canvas/HTMLCanvasElementModule.h"
 
 #include "core/dom/DOMNodeIds.h"
 #include "core/html/canvas/CanvasContextCreationAttributes.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/offscreencanvas/OffscreenCanvas.h"
@@ skipping 57 matching lines @@
   offscreenCanvas->setAssociatedCanvasId(DOMNodeIds::idForNode(&canvas));
 
   CanvasSurfaceLayerBridge* bridge = canvas.surfaceLayerBridge();
   if (bridge) {
     // If a bridge exists, it means canvas.createSurfaceLayer() has been called
     // and its SurfaceId has been populated as well.
     offscreenCanvas->setSurfaceId(
         bridge->getSurfaceId().frame_sink_id().client_id(),
         bridge->getSurfaceId().frame_sink_id().sink_id(),
         bridge->getSurfaceId().local_frame_id().local_id(),
-        bridge->getSurfaceId().local_frame_id().nonce());
+        bridge->getSurfaceId()
+            .local_frame_id()
+            .nonce()
+            .GetHighForSerialization(),
+        bridge->getSurfaceId()
+            .local_frame_id()
+            .nonce()
+            .GetLowForSerialization());
   }
   return offscreenCanvas;
 }
 }