mus/gpu: Introduce the GpuServiceHost mojom interface.

services/ui/gpu/interfaces/context_lost_reason_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 SERVICES_UI_GPU_INTERFACES_CONTEXT_LOST_REASON_TRAITS_H_
+#define SERVICES_UI_GPU_INTERFACES_CONTEXT_LOST_REASON_TRAITS_H_
+
+#include "gpu/command_buffer/common/constants.h"
+#include "services/ui/gpu/interfaces/context_lost_reason.mojom.h"
+
+namespace mojo {
+
+template <>
+struct EnumTraits<ui::mojom::ContextLostReason, gpu::error::ContextLostReason> {
+  static ui::mojom::ContextLostReason ToMojom(
+      gpu::error::ContextLostReason reason) {
+    switch (reason) {
+      case gpu::error::kGuilty:
+        return ui::mojom::ContextLostReason::GUILTY;
+      case gpu::error::kInnocent:
+        return ui::mojom::ContextLostReason::INNOCENT;
+      case gpu::error::kUnknown:
+        return ui::mojom::ContextLostReason::UNKNOWN;
+      case gpu::error::kOutOfMemory:
+        return ui::mojom::ContextLostReason::OUT_OF_MEMORY;
+      case gpu::error::kMakeCurrentFailed:
+        return ui::mojom::ContextLostReason::MAKE_CURRENT_FAILED;
+      case gpu::error::kGpuChannelLost:
+        return ui::mojom::ContextLostReason::GPU_CHANNEL_LOST;
+      case gpu::error::kInvalidGpuMessage:
+        return ui::mojom::ContextLostReason::INVALID_GPU_MESSAGE;
+    }
+    NOTREACHED();
+    return ui::mojom::ContextLostReason::UNKNOWN;
+  }
+
+  static bool FromMojom(ui::mojom::ContextLostReason reason,
+                        gpu::error::ContextLostReason* out) {
+    switch (reason) {
+      case ui::mojom::ContextLostReason::GUILTY:
+        *out = gpu::error::kGuilty;
+        return true;
+      case ui::mojom::ContextLostReason::INNOCENT:
+        *out = gpu::error::kInnocent;
+        return true;
+      case ui::mojom::ContextLostReason::UNKNOWN:
+        *out = gpu::error::kUnknown;
+        return true;
+      case ui::mojom::ContextLostReason::OUT_OF_MEMORY:
+        *out = gpu::error::kOutOfMemory;
+        return true;
+      case ui::mojom::ContextLostReason::MAKE_CURRENT_FAILED:
+        *out = gpu::error::kMakeCurrentFailed;
+        return true;
+      case ui::mojom::ContextLostReason::GPU_CHANNEL_LOST:
+        *out = gpu::error::kGpuChannelLost;
+        return true;
+      case ui::mojom::ContextLostReason::INVALID_GPU_MESSAGE:
+        *out = gpu::error::kInvalidGpuMessage;
+        return true;
+    }
+    return false;
+  }
+};
+
+}  // namespace mojo
+
+#endif  // SERVICES_UI_GPU_INTERFACES_CONTEXT_LOST_REASON_TRAITS_H_