Implement DRM Native Pixmap using prime buffer

ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc

Index: ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc
diff --git a/ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc b/ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc
index a55c34627b22cee3e6ec8eb13493aa997c81a43d..e03335f25fcf5496b4dddfa92eaa86e87e5d6361 100644
--- a/ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc
+++ b/ui/ozone/platform/cast/client_native_pixmap_factory_cast.cc
@@ -29,8 +29,6 @@ class ClientNativePixmapCast : public ClientNativePixmap {
 class ClientNativePixmapFactoryCast : public ClientNativePixmapFactory {
  public:
   // ClientNativePixmapFactoryCast implementation:
-  void Initialize(base::ScopedFD device_fd) override {}
-
   bool IsConfigurationSupported(gfx::BufferFormat format,
                                 gfx::BufferUsage usage) const override {
     return format == gfx::BufferFormat::RGBA_8888 &&