Add NativePixmapHandle type & interface for exporting them

ui/gfx/buffer_types.h

Index: ui/gfx/buffer_types.h
diff --git a/ui/gfx/buffer_types.h b/ui/gfx/buffer_types.h
index b7c787abab9f847cdd13341d6ddfe163febd3da4..30a1b08d1a1120b80a41d63c209557539fc12822 100644
--- a/ui/gfx/buffer_types.h
+++ b/ui/gfx/buffer_types.h
@@ -5,6 +5,10 @@
 #ifndef UI_GFX_BUFFER_TYPES_H_
 #define UI_GFX_BUFFER_TYPES_H_
 
+#if defined(USE_OZONE)
+#include "base/file_descriptor_posix.h"
+#endif
+
 namespace gfx {
 
 // The format needs to be taken into account when mapping a buffer into the
@@ -32,6 +36,16 @@ enum class BufferFormat {
 // contents.
 enum class BufferUsage { MAP, PERSISTENT_MAP, SCANOUT, LAST = SCANOUT };
 
+#if defined(USE_OZONE)
+struct NativePixmapHandle {

[reveman, 2015/08/05 04:18:00]

Can you move this out of this otherwise platform independent file? Maybe add it
to ui/ozone/public/native_pixmap.h

[spang, 2015/08/05 13:26:15]

If it is embedded in GpuMemoryBufferHandle, it can't go in ui/ozone without
breaking the include rules.

I've moved it to ui/gfx/native_pixmap_handle_ozone.h.

[reveman, 2015/08/05 13:58:52]

Acknowledged.

+  // A file descriptor for the underlying memory object (usually dmabuf).
+  base::FileDescriptor fd;
+
+  // The stride to used when accessing the buffer via a memory mapping.
+  int32_t stride = 0;
+};
+#endif
+
 }  // namespace gfx
 
 #endif  // UI_GFX_BUFFER_TYPES_H_