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

ui/ozone/demo/surfaceless_gl_renderer.cc

Index: ui/ozone/demo/surfaceless_gl_renderer.cc
diff --git a/ui/ozone/demo/surfaceless_gl_renderer.cc b/ui/ozone/demo/surfaceless_gl_renderer.cc
index 0eaecb698175d398ac5b881a4d67f1af39c1d68e..dde766f795b06152455ba578d2dc7aa6e4827d10 100644
--- a/ui/ozone/demo/surfaceless_gl_renderer.cc
+++ b/ui/ozone/demo/surfaceless_gl_renderer.cc
@@ -38,8 +38,8 @@ bool SurfacelessGlRenderer::BufferWrapper::Initialize(
   scoped_refptr<NativePixmap> pixmap =
       OzonePlatform::GetInstance()
           ->GetSurfaceFactoryOzone()
-          ->CreateNativePixmap(widget, size, SurfaceFactoryOzone::RGBX_8888,
-                               SurfaceFactoryOzone::SCANOUT);
+          ->CreateNativePixmap(widget, size, NATIVE_PIXMAP_FORMAT_RGBX_8888,
+                               NATIVE_PIXMAP_USAGE_SCANOUT);
   scoped_refptr<gfx::GLImageOzoneNativePixmap> image(
       new gfx::GLImageOzoneNativePixmap(size, GL_RGB));
   if (!image->Initialize(pixmap.get(), gfx::GpuMemoryBuffer::RGBX_8888)) {