Synchronize OffscreenCanvas content with the placeholder canvas

third_party/WebKit/Source/bindings/core/v8/serialization/V8ScriptValueSerializer.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 "bindings/core/v8/serialization/V8ScriptValueSerializer.h"
 
 #include "bindings/core/v8/ToV8.h"
 #include "bindings/core/v8/V8Blob.h"
 #include "bindings/core/v8/V8CompositorProxy.h"
 #include "bindings/core/v8/V8File.h"
@@ skipping 260 matching lines @@
     }
     if (canvas->renderingContext()) {
       exceptionState.throwDOMException(DataCloneError,
                                        "An OffscreenCanvas could not be cloned "
                                        "because it had a rendering context.");
       return false;
     }
     writeTag(OffscreenCanvasTransferTag);
     writeUint32(canvas->width());
     writeUint32(canvas->height());
-    writeUint32(canvas->getAssociatedCanvasId());
+    writeUint32(canvas->placeholderCanvasId());
     writeUint32(canvas->clientId());
     writeUint32(canvas->sinkId());
     writeUint32(canvas->localId());
     writeUint64(canvas->nonceHigh());
     writeUint64(canvas->nonceLow());
     return true;
   }
   return false;
 }
 
@@ skipping 74 matching lines @@
   }
   if (!exceptionState.hadException()) {
     StringView interface = wrappable->wrapperTypeInfo()->interfaceName;
     exceptionState.throwDOMException(
         DataCloneError, interface + " object could not be cloned.");
   }
   return v8::Nothing<bool>();
 }
 
 }  // namespace blink