Make ImageBitmap transfers work in cases that require serialization

third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h

Index: third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h b/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h
index 711c01f6e8db96aaff5055c13e6745430d9d3260..85f0f0dd9eb5ccce4ed86c365ebdee9c4745075d 100644
--- a/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h
+++ b/third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.h
@@ -123,6 +123,11 @@ class CORE_EXPORT SerializedScriptValue
       const ArrayBufferArray&,
       ExceptionState&);
 
+  static std::unique_ptr<ImageBitmapContentsArray> transferImageBitmapContents(
+      v8::Isolate*,
+      const ImageBitmapArray&,
+      ExceptionState&);
+
   // Informs the V8 about external memory allocated and owned by this object.
   // Large values should contribute to GC counters to eventually trigger a GC,
   // otherwise flood of postMessage() can cause OOM.