Mojo C++ bindings: share DataView class between chromium and blink variants.

mojo/public/cpp/bindings/tests/shared_rect_traits.h

+// 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 MOJO_PUBLIC_CPP_BINDINGS_TESTS_SHARED_RECT_TRAITS_H_
+#define MOJO_PUBLIC_CPP_BINDINGS_TESTS_SHARED_RECT_TRAITS_H_
+
+#include "mojo/public/cpp/bindings/struct_traits.h"
+#include "mojo/public/cpp/bindings/tests/shared_rect.h"
+#include "mojo/public/interfaces/bindings/tests/rect.mojom-shared.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<test::SharedTypemappedRectDataView, test::SharedRect> {
+  static int x(const test::SharedRect& r) { return r.x(); }
+  static int y(const test::SharedRect& r) { return r.y(); }
+  static int width(const test::SharedRect& r) { return r.width(); }
+  static int height(const test::SharedRect& r) { return r.height(); }
+
+  static bool Read(test::SharedTypemappedRectDataView r,
+                   test::SharedRect* out) {
+    out->set_x(r.x());
+    out->set_y(r.y());
+    out->set_width(r.width());
+    out->set_height(r.height());
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_CPP_BINDINGS_TESTS_SHARED_RECT_TRAITS_H_