ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

ui/ozone/public/surface_factory_ozone.h

Index: ui/ozone/public/surface_factory_ozone.h
diff --git a/ui/ozone/public/surface_factory_ozone.h b/ui/ozone/public/surface_factory_ozone.h
index 4dc5572ad3c34cbbaf8539c7574878a8bc03da11..f7b7cbde99df2e2dbef4e443a43b66c01e187140 100644
--- a/ui/ozone/public/surface_factory_ozone.h
+++ b/ui/ozone/public/surface_factory_ozone.h
@@ -126,10 +126,6 @@ class OZONE_BASE_EXPORT SurfaceFactoryOzone {
   // overlay-only mode.
   virtual bool CanShowPrimaryPlaneAsOverlay();
 
-  // Returns true if the platform is able to create buffers for a specific usage
-  // such as MAP for zero copy or SCANOUT for display controller.
-  virtual bool CanCreateNativePixmap(BufferUsage usage);
-
  protected:
   SurfaceFactoryOzone();
   virtual ~SurfaceFactoryOzone();