Implement StructTraits for various cc and gpu types

gpu/ipc/common/sync_token_struct_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 GPU_IPC_COMMON_SYNC_TOKEN_STRUCT_TRAITS_H_
+#define GPU_IPC_COMMON_SYNC_TOKEN_STRUCT_TRAITS_H_
+
+#include "gpu/command_buffer/common/sync_token.h"
+#include "gpu/ipc/common/sync_token.mojom.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<gpu::mojom::SyncToken, gpu::SyncToken> {
+  static bool verified_flush(const gpu::SyncToken& token) {
+    return token.verified_flush();
+  }
+
+  static gpu::mojom::CommandBufferNamespace namespace_id(
+      const gpu::SyncToken& token) {
+    return static_cast<gpu::mojom::CommandBufferNamespace>(
+        token.namespace_id());
+  }
+
+  static int32_t extra_data_field(const gpu::SyncToken& token) {
+    return token.extra_data_field();
+  }
+
+  static uint64_t command_buffer_id(const gpu::SyncToken& token) {
+    return token.command_buffer_id().GetUnsafeValue();
+  }
+
+  static uint64_t release_count(const gpu::SyncToken& token) {
+    return token.release_count();
+  }
+
+  static bool Read(gpu::mojom::SyncTokenDataView data, gpu::SyncToken* out) {
+    *out = gpu::SyncToken(
+        static_cast<gpu::CommandBufferNamespace>(data.namespace_id()),
+        data.extra_data_field(),
+        gpu::CommandBufferId::FromUnsafeValue(data.command_buffer_id()),
+        data.release_count());
+    if (data.verified_flush())
+      out->SetVerifyFlush();
+    return true;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // GPU_IPC_COMMON_SYNC_TOKEN_STRUCT_TRAITS_H_