ozone: gbm: Add overlay support

ui/ozone/platform/dri/dri_wrapper.h

Index: ui/ozone/platform/dri/dri_wrapper.h
diff --git a/ui/ozone/platform/dri/dri_wrapper.h b/ui/ozone/platform/dri/dri_wrapper.h
index da5c99b156bf60c265be9e77271ac7f17af87dba..9b94ddda1e17841dc48fb67a7787c7725acdea7f 100644
--- a/ui/ozone/platform/dri/dri_wrapper.h
+++ b/ui/ozone/platform/dri/dri_wrapper.h
@@ -8,6 +8,9 @@
 #include <stdint.h>
 
 #include "base/macros.h"
+#include "ui/gfx/overlay_transform.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/rect_f.h"
 #include "ui/ozone/platform/dri/scoped_drm_types.h"
 
 typedef struct _drmEventContext drmEventContext;
@@ -67,6 +70,15 @@ class DriWrapper {
   // will receive when processing the pageflip event.
   virtual bool PageFlip(uint32_t crtc_id, uint32_t framebuffer, void* data);
 
+  // Schedule an overlay to be show during the page flip for CRTC |crtc_id|.
+  // |source| location from |framebuffer| will be shown on overlay
+  // |overlay_plane|, in the bounds specified by |location| on the screen.
+  virtual bool PageFlipOverlay(uint32_t crtc_id,
+                               uint32_t framebuffer,
+                               const gfx::Rect& location,
+                               const gfx::RectF& source,
+                               int overlay_plane);
+
   // Returns the property with name |name| associated with |connector|. Returns
   // NULL if property not found. If the returned value is valid, it must be
   // released using FreeProperty().