Implement sk_sp<SkImageFilter> StructTraits

skia/public/interfaces/image_filter_struct_traits.h

Index: skia/public/interfaces/image_filter_struct_traits.h
diff --git a/skia/public/interfaces/image_filter_struct_traits.h b/skia/public/interfaces/image_filter_struct_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..636dee25660fe055208b04c8bda8dd85dae6cdc3
--- /dev/null
+++ b/skia/public/interfaces/image_filter_struct_traits.h
@@ -0,0 +1,58 @@
+// 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.
+
+#ifndef SKIA_PUBLIC_INTERFACES_IMAGE_FILTER_STRUCT_TRAITS_H_
+#define SKIA_PUBLIC_INTERFACES_IMAGE_FILTER_STRUCT_TRAITS_H_
+
+#include "skia/public/interfaces/image_filter.mojom.h"
+#include "third_party/skia/include/core/SkData.h"
+#include "third_party/skia/include/core/SkImageFilter.h"
+#include "third_party/skia/include/core/SkFlattenableSerialization.h"
+
+namespace mojo {
+
+struct ImageFilterBuffer {
+  ImageFilterBuffer();
+  ImageFilterBuffer(const ImageFilterBuffer& other);
+  ~ImageFilterBuffer();
+  sk_sp<SkData> data;
+};
+
+template <>
+struct ArrayTraits<ImageFilterBuffer> {
+  using Element = uint8_t;
+  static size_t GetSize(const ImageFilterBuffer& b);
+  static uint8_t* GetData(ImageFilterBuffer& b);
+  static const uint8_t* GetData(const ImageFilterBuffer& b);
+  static uint8_t& GetAt(ImageFilterBuffer& b, size_t i);
+  static const uint8_t& GetAt(const ImageFilterBuffer& b, size_t i);
+  static bool Resize(ImageFilterBuffer& b, size_t size);
+};
+
+template <>
+struct StructTraits<skia::mojom::ImageFilter, sk_sp<SkImageFilter>> {
+  static ImageFilterBuffer data(const sk_sp<SkImageFilter>& filter) {
+    ImageFilterBuffer buffer;
+    buffer.data = sk_sp<SkData>(SkValidatingSerializeFlattenable(filter.get()));
+    return buffer;
+  }
+
+  static bool Read(skia::mojom::ImageFilterDataView data,
+                   sk_sp<SkImageFilter>* out) {
+    ImageFilterBuffer buffer;
+    if (!data.ReadData(&buffer))
+      return false;
+    SkFlattenable* flattenable = SkValidatingDeserializeFlattenable(
+        buffer.data->bytes(), buffer.data->size(),
+        SkImageFilter::GetFlattenableType());
+    if (!flattenable)
+      return false;
+    *out = sk_sp<SkImageFilter>(static_cast<SkImageFilter*>(flattenable));
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // SKIA_PUBLIC_INTERFACES_IMAGE_FILTER_STRUCT_TRAITS_H_