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 33119da7bc4fd491eceb5d9930fe1f481c0cf16d..7754e0e4a7c23ac265400dbde09b9b27c177e0c7 100644
--- a/ui/ozone/public/surface_factory_ozone.h
+++ b/ui/ozone/public/surface_factory_ozone.h
@@ -111,10 +111,6 @@ 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(gfx::BufferUsage usage);
-
  protected:
   SurfaceFactoryOzone();
   virtual ~SurfaceFactoryOzone();