Drawing an animated image to a canvas now behave as expected

Source/platform/graphics/Image.cpp

Index: Source/platform/graphics/Image.cpp
diff --git a/Source/platform/graphics/Image.cpp b/Source/platform/graphics/Image.cpp
index 17b5452a020e6768da17cb555bc938f756991f7b..429b530575d4b843875185422ea4b0639c2fbbc4 100644
--- a/Source/platform/graphics/Image.cpp
+++ b/Source/platform/graphics/Image.cpp
@@ -237,4 +237,11 @@ void Image::computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsic
     intrinsicHeight = Length(intrinsicRatio.height(), Fixed);
 }
 
+PassRefPtr<Image> Image::imageForDefaultFrame()
+{
+    RefPtr<Image> image(this);
+
+    return image.release();
+}
+
 }