ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

ui/ozone/public/client_native_pixmap_factory.h

Index: ui/ozone/public/client_native_pixmap_factory.h
diff --git a/ui/ozone/public/client_native_pixmap_factory.h b/ui/ozone/public/client_native_pixmap_factory.h
index a5d58e16c6e1018e20e628094165d076c9478211..9ca0e6e0fe493110c26e83e827e392b93bfbe8a2 100644
--- a/ui/ozone/public/client_native_pixmap_factory.h
+++ b/ui/ozone/public/client_native_pixmap_factory.h
@@ -7,6 +7,7 @@
 
 #include <vector>
 
+#include "base/file_descriptor_posix.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/buffer_types.h"
 #include "ui/ozone/ozone_export.h"
@@ -17,12 +18,6 @@ struct NativePixmapHandle;
 class Size;
 }
 
-namespace base {
-
-struct FileDescriptor;
-
-}  // namespace base
-
 namespace ui {
 
 // The Ozone interface allows external implementations to hook into Chromium to
@@ -36,6 +31,12 @@ class OZONE_EXPORT ClientNativePixmapFactory {
 
   virtual ~ClientNativePixmapFactory();
 
+  // Open VGEM device file. A caller takes ownership of the file descriptor.
+  virtual int OpenVgemFD() const = 0;

[reveman, 2015/08/14 13:19:13]

could this return a ScopedFD to make the ownership more clear?

[dshwang, 2015/08/14 16:20:27]

Done.

+
+  // Set VGEM device file. This takes ownership of the file descriptor.
+  virtual void SetVgemFD(const base::FileDescriptor& vgem_fd) = 0;

[reveman, 2015/08/14 13:19:13]

Can we pass a ScopedFD to this function instead?

[dshwang, 2015/08/14 16:20:27]

Done.

+
   struct Configuration {
     gfx::BufferFormat format;
     gfx::BufferUsage usage;