Not for review.

ui/gfx/ozone/dri/dri_wrapper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/ozone/dri/dri_wrapper.h"
 
 #include <fcntl.h>
 #include <unistd.h>
 #include <xf86drmMode.h>
 
@@ skipping 55 matching lines @@
                        handle,
                        framebuffer);
 }
 
 bool DriWrapper::RemoveFramebuffer(uint32_t framebuffer) {
   CHECK(fd_ >= 0);
   return !drmModeRmFB(fd_, framebuffer);
 }
 
 bool DriWrapper::PageFlip(uint32_t crtc_id,
-                               uint32_t framebuffer,
-                               void* data) {
+                          uint32_t framebuffer,
+                          gfx::Rect overlay_plane_rect,
+                          gfx::Size overlay_plane_size,
+                          uint32_t overlay_plane_fb_id,
+                          int overlay_plane,
+                          void* data) {
   CHECK(fd_ >= 0);
-  return !drmModePageFlip(fd_,
-                          crtc_id,
-                          framebuffer,
-                          DRM_MODE_PAGE_FLIP_EVENT,
-                          data);
+
+  drmModePageFlip(fd_, crtc_id, framebuffer, DRM_MODE_PAGE_FLIP_EVENT, data);
+
+  if (overlay_plane_fb_id) {
+    int rc = drmModeSetPlane(fd_,
+                             overlay_plane,
+                             crtc_id,
+                             overlay_plane_fb_id,
+                             0,
+                             overlay_plane_rect.x(),
+                             overlay_plane_rect.y(),
+                             overlay_plane_rect.width(),
+                             overlay_plane_rect.height(),
+                             0,
+                             0,
+                             overlay_plane_size.width() << 16,
+                             overlay_plane_size.height() << 16);
+
+    if (rc) {
+      char buffer[512];
+      sprintf(buffer, "failed to set overlay: %s\n", strerror(-rc));
+      LOG(ERROR) << buffer;
+    }
+  }
+
+  return true;
 }
 
 bool DriWrapper::ConnectorSetProperty(uint32_t connector_id,
                                            uint32_t property_id,
                                            uint64_t value) {
   CHECK(fd_ >= 0);
   return !drmModeConnectorSetProperty(fd_, connector_id, property_id, value);
 }
 
 }  // namespace gfx