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

ui/ozone/platform/drm/gpu/gbm_surface_factory.cc

Index: ui/ozone/platform/drm/gpu/gbm_surface_factory.cc
diff --git a/ui/ozone/platform/drm/gpu/gbm_surface_factory.cc b/ui/ozone/platform/drm/gpu/gbm_surface_factory.cc
index 40c9e85902f003353761b81d6159a71151b59fb2..78bcb2897c071e3a764c015df51a3d7aa64a688a 100644
--- a/ui/ozone/platform/drm/gpu/gbm_surface_factory.cc
+++ b/ui/ozone/platform/drm/gpu/gbm_surface_factory.cc
@@ -107,9 +107,9 @@ GbmSurfaceFactory::CreateSurfacelessEGLSurfaceForWidget(
 scoped_refptr<ui::NativePixmap> GbmSurfaceFactory::CreateNativePixmap(
     gfx::AcceleratedWidget widget,
     gfx::Size size,
-    BufferFormat format,
-    BufferUsage usage) {
-  if (usage == MAP)
+    PixmapFormat format,
+    PixmapUsage usage) {
+  if (usage == PIXMAP_USAGE_MAP)
     return nullptr;
 
   scoped_refptr<GbmDevice> gbm = GetGbmDevice(widget);
@@ -132,20 +132,6 @@ bool GbmSurfaceFactory::CanShowPrimaryPlaneAsOverlay() {
   return allow_surfaceless_;
 }
 
-bool GbmSurfaceFactory::CanCreateNativePixmap(BufferUsage usage) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  switch (usage) {
-    case MAP:
-      return false;
-    case PERSISTENT_MAP:
-      return false;
-    case SCANOUT:
-      return true;
-  }
-  NOTREACHED();
-  return false;
-}
-
 scoped_refptr<GbmDevice> GbmSurfaceFactory::GetGbmDevice(
     gfx::AcceleratedWidget widget) {
   return static_cast<GbmDevice*>(