Use newImageSnapshot() to get an image from a Canvas

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 429b530575d4b843875185422ea4b0639c2fbbc4..edbf734730b862e2cfc10e7ec9048f0b752c5901 100644
--- a/Source/platform/graphics/Image.cpp
+++ b/Source/platform/graphics/Image.cpp
@@ -39,6 +39,7 @@
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebData.h"
+#include "third_party/skia/include/core/SkImage.h"
 #include "wtf/MainThread.h"
 #include "wtf/StdLibExtras.h"
 
@@ -244,4 +245,9 @@ PassRefPtr<Image> Image::imageForDefaultFrame()
     return image.release();
 }
 
+PassRefPtr<SkImage> Image::image()
+{
+    return nullptr;
+}
+
 }