NotForReview: Implement zero/one-copy texture for ozone freon using Intel DRM

ui/ozone/platform/drm/gbm_surface_factory.cc

Index: ui/ozone/platform/drm/gbm_surface_factory.cc
diff --git a/ui/ozone/platform/drm/gbm_surface_factory.cc b/ui/ozone/platform/drm/gbm_surface_factory.cc
index 290073bc3ba8166e13eccb1bd382565d013df1ec..4685900279d91eb0330d3850374a0913565fc612 100644
--- a/ui/ozone/platform/drm/gbm_surface_factory.cc
+++ b/ui/ozone/platform/drm/gbm_surface_factory.cc
@@ -24,6 +24,10 @@
 #include "ui/ozone/public/surface_ozone_canvas.h"
 #include "ui/ozone/public/surface_ozone_egl.h"
 
+#if defined(ARCH_CPU_X86_FAMILY)
+#include "ui/ozone/platform/drm/gpu/gbm_map_pixmap_intel.h"
+#endif
+
 namespace ui {
 namespace {
 
@@ -158,15 +162,23 @@ scoped_refptr<ui::NativePixmap> GbmSurfaceFactory::CreateNativePixmap(
     gfx::AcceleratedWidget widget,
     gfx::Size size,
     BufferFormat format,
-    BufferUsage usage) {
-  if (usage == MAP)
-    return nullptr;
-
+    BufferUsage usage,
+    gfx::GpuMemoryBufferHandle* handle) {
+  DCHECK(handle || usage == SCANOUT);
   scoped_refptr<GbmDevice> gbm = GetGbmDevice(widget);
   DCHECK(gbm);
 
-  scoped_refptr<GbmBuffer> buffer =
-      GbmBuffer::CreateBuffer(gbm, format, size, true);
+#if defined(ARCH_CPU_X86_FAMILY)
+  if (usage == MAP) {
+    scoped_refptr<GbmMapPixmapIntel> pixmap =
+        GbmMapPixmapIntel::CreatePixmap(gbm, format, size, handle);
+    if (!pixmap.get())
+      return nullptr;
+    return pixmap;
+  }
+#endif
+
+  scoped_refptr<GbmBuffer> buffer = GbmBuffer::CreateBuffer(gbm, format, size);
   if (!buffer.get())
     return nullptr;
 
@@ -215,7 +227,6 @@ bool GbmSurfaceFactory::CanShowPrimaryPlaneAsOverlay() {
 bool GbmSurfaceFactory::CanCreateNativePixmap(BufferUsage usage) {
   switch (usage) {
     case MAP:
-      return false;
     case SCANOUT:
       return true;
   }