Create child window in GPU process for DirectComposition

content/common/gpu/child_window_surface_win.h

+// Copyright 2015 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 CONTENT_COMMON_GPU_CHILD_WINDOW_SURFACE_WIN_H_
+#define CONTENT_COMMON_GPU_CHILD_WINDOW_SURFACE_WIN_H_
+#include "ui/gl/gl_surface_egl.h"
+
+#include <windows.h>
+
+namespace content {
+
+class GpuChannelManager;
+
+class ChildWindowSurfaceWin : public gfx::NativeViewGLSurfaceEGL {
+ public:
+  ChildWindowSurfaceWin(GpuChannelManager* manager, HWND parent_window);
+
+  // GLSurface implementation.
+  bool Resize(const gfx::Size& size,
+              float scale_factor,
+              bool has_alpha) override;
+  bool InitializeNativeWindow() override;
+
+ protected:
+  ~ChildWindowSurfaceWin() override;
+
+ private:
+  HWND parent_window_;
+  GpuChannelManager* manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChildWindowSurfaceWin);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CHILD_WINDOW_SURFACE_WIN_H_