gfx: Fix sending native ozone pixmaps from InProcessCommandBuffer.

ui/gfx/native_pixmap_handle.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 UI_GFX_NATIVE_PIXMAP_HANDLE_H_
 #define UI_GFX_NATIVE_PIXMAP_HANDLE_H_
 
 #include <stddef.h>
+#include <stdint.h>
+
 #include <vector>
 
 #include "ui/gfx/gfx_export.h"
 
 #if defined(USE_OZONE)
 #include "base/file_descriptor_posix.h"
 #endif
 
 namespace gfx {
 
@@ skipping 24 matching lines @@
 
   ~NativePixmapHandle();
 
 #if defined(USE_OZONE)
   // File descriptors for the underlying memory objects (usually dmabufs).
   std::vector<base::FileDescriptor> fds;
 #endif
   std::vector<NativePixmapPlane> planes;
 };
 
+#if defined(USE_OZONE)
+// Returns an instance of |handle| which can be sent over IPC. This duplicates
+// the file-handles, so that the IPC code take ownership of them, without
+// invalidating |handle|.
+NativePixmapHandle CloneHandleForIPC(const NativePixmapHandle& handle);
+#endif
+
 }  // namespace gfx
 
 #endif  // UI_GFX_NATIVE_PIXMAP_HANDLE_H_