refactor: rename the atom directory to shell

shell/browser/osr/osr_host_display_client.h

@@ -0,0 +1,77 @@
+// Copyright (c) 2019 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_BROWSER_OSR_OSR_HOST_DISPLAY_CLIENT_H_
+#define ATOM_BROWSER_OSR_OSR_HOST_DISPLAY_CLIENT_H_
+
+#include <memory>
+
+#include "base/callback.h"
+#include "base/memory/shared_memory_mapping.h"
+#include "components/viz/host/host_display_client.h"
+#include "services/viz/privileged/interfaces/compositing/layered_window_updater.mojom.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace atom {
+
+typedef base::Callback<void(const gfx::Rect&, const SkBitmap&)> OnPaintCallback;
+
+class LayeredWindowUpdater : public viz::mojom::LayeredWindowUpdater {
+ public:
+  explicit LayeredWindowUpdater(viz::mojom::LayeredWindowUpdaterRequest request,
+                                OnPaintCallback callback);
+  ~LayeredWindowUpdater() override;
+
+  void SetActive(bool active);
+
+  // viz::mojom::LayeredWindowUpdater implementation.
+  void OnAllocatedSharedMemory(
+      const gfx::Size& pixel_size,
+      mojo::ScopedSharedBufferHandle scoped_buffer_handle) override;
+  void Draw(const gfx::Rect& damage_rect, DrawCallback draw_callback) override;
+
+ private:
+  OnPaintCallback callback_;
+  mojo::Binding<viz::mojom::LayeredWindowUpdater> binding_;
+  std::unique_ptr<SkCanvas> canvas_;
+  bool active_ = false;
+
+#if !defined(WIN32)
+  base::WritableSharedMemoryMapping shm_mapping_;
+#endif
+
+  DISALLOW_COPY_AND_ASSIGN(LayeredWindowUpdater);
+};
+
+class OffScreenHostDisplayClient : public viz::HostDisplayClient {
+ public:
+  explicit OffScreenHostDisplayClient(gfx::AcceleratedWidget widget,
+                                      OnPaintCallback callback);
+  ~OffScreenHostDisplayClient() override;
+
+  void SetActive(bool active);
+
+ private:
+  void IsOffscreen(IsOffscreenCallback callback) override;
+
+#if defined(OS_MACOSX)
+  void OnDisplayReceivedCALayerParams(
+      const gfx::CALayerParams& ca_layer_params) override;
+#endif
+
+  void CreateLayeredWindowUpdater(
+      viz::mojom::LayeredWindowUpdaterRequest request) override;
+
+  std::unique_ptr<LayeredWindowUpdater> layered_window_updater_;
+  OnPaintCallback callback_;
+  bool active_ = false;
+
+  DISALLOW_COPY_AND_ASSIGN(OffScreenHostDisplayClient);
+};
+
+}  // namespace atom
+
+#endif  // ATOM_BROWSER_OSR_OSR_HOST_DISPLAY_CLIENT_H_