Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/ghost/GHOST_IXrContext.hh

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+/* SPDX-FileCopyrightText: 2002-2023 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup GHOST
+ */
+
+#pragma once
+
+#include "GHOST_Types.hh"
+
+class GHOST_XrSession;
+struct GHOST_XrSessionBeginInfo;
+
+class GHOST_IXrContext {
+ public:
+  virtual ~GHOST_IXrContext() = default;
+
+  virtual void startSession(const GHOST_XrSessionBeginInfo *begin_info) = 0;
+  virtual void endSession() = 0;
+  virtual bool isSessionRunning() const = 0;
+  virtual void drawSessionViews(void *draw_customdata) = 0;
+
+  /* Needed for the GHOST C API. */
+  virtual GHOST_XrSession *getSession() = 0;
+  virtual const GHOST_XrSession *getSession() const = 0;
+
+  virtual void dispatchErrorMessage(const class GHOST_XrException *) const = 0;
+
+  virtual void setGraphicsContextBindFuncs(GHOST_XrGraphicsContextBindFn bind_fn,
+                                           GHOST_XrGraphicsContextUnbindFn unbind_fn) = 0;
+  virtual void setDrawViewFunc(GHOST_XrDrawViewFn draw_view_fn) = 0;
+  virtual void setPassthroughEnabledFunc(GHOST_XrPassthroughEnabledFn passthrough_enabled_fn) = 0;
+  virtual void setDisablePassthroughFunc(GHOST_XrDisablePassthroughFn disable_passthrough_fn) = 0;
+
+  virtual bool needsUpsideDownDrawing() const = 0;
+};