Implement TransferableResource StructTraits

cc/ipc/transferable_resource.mojom

+// 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.
+
+module cc.mojom;
+
+import "gpu/ipc/common/mailbox_holder.mojom";
+import "ui/gfx/geometry/mojo/geometry.mojom";
+
+enum ResourceFormat {
+  RGBA_8888,
+  RGBA_4444,
+  BGRA_8888,
+  ALPHA_8,
+  LUMINANCE_8,
+  RGB_565,
+  ETC1,
+};
+
+// See cc/resources/transferable_resource.h.
+struct TransferableResource {
+  uint32 id;
+  ResourceFormat format;
+  uint32 filter;
+  mojo.Size size;
+  gpu.mojom.MailboxHolder mailbox_holder;
+  bool read_lock_fences_enabled;
+  bool is_software;
+  int32 gpu_memory_buffer_id;
+  bool is_overlay_candidate;
+};