ozone: dri: add synchronous SwapBuffers support on surfaceless

ui/ozone/platform/dri/hardware_display_plane_manager_legacy.cc

 // Copyright 2014 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/ozone/platform/dri/hardware_display_plane_manager_legacy.h"
 
 #include "base/bind.h"
 #include "ui/ozone/platform/dri/crtc_controller.h"
 #include "ui/ozone/platform/dri/dri_wrapper.h"
 #include "ui/ozone/platform/dri/scanout_buffer.h"
 
 namespace ui {
 
 HardwareDisplayPlaneManagerLegacy::HardwareDisplayPlaneManagerLegacy() {
 }
 
 HardwareDisplayPlaneManagerLegacy::~HardwareDisplayPlaneManagerLegacy() {
 }
 
 bool HardwareDisplayPlaneManagerLegacy::Commit(
-    HardwareDisplayPlaneList* plane_list) {
+    HardwareDisplayPlaneList* plane_list,
+    bool is_sync) {
   if (plane_list->plane_list.empty())  // No assigned planes, nothing to do.
     return true;
   bool ret = true;
   // The order of operations here (set new planes, pageflip, clear old planes)
   // is designed to minimze the chance of a significant artifact occurring.
   // The planes must be updated first because the main plane no longer contains
   // their content. The old planes are removed last because the previous primary
   // plane used them as overlays and thus didn't contain their content, so we
   // must first flip to the new primary plane, which does. The error here will
   // be the delta of (new contents, old contents), but it should be barely
   // noticeable.
   for (const auto& flip : plane_list->legacy_page_flips) {
     // Permission Denied is a legitimate error
     for (const auto& plane : flip.planes) {
       if (!drm_->PageFlipOverlay(flip.crtc_id, plane.framebuffer, plane.bounds,
                                  plane.src_rect, plane.plane)) {
         LOG(ERROR) << "Cannot display plane on overlay: error="
                    << strerror(errno) << "crtc=" << flip.crtc
                    << " plane=" << plane.plane;
         ret = false;
         flip.crtc->PageFlipFailed();
         break;
       }
     }
-    if (!drm_->PageFlip(flip.crtc_id, flip.framebuffer,
+    if (!drm_->PageFlip(flip.crtc_id, flip.framebuffer, is_sync,
                         base::Bind(&CrtcController::OnPageFlipEvent,
                                    flip.crtc->AsWeakPtr()))) {
       if (errno != EACCES) {
         LOG(ERROR) << "Cannot page flip: error='" << strerror(errno) << "'"
                    << " crtc=" << flip.crtc_id
-                   << " framebuffer=" << flip.framebuffer;
+                   << " framebuffer=" << flip.framebuffer
+                   << " is_sync=" << is_sync;
         LOG(ERROR) << "Failed to commit planes";
         ret = false;
       }
       flip.crtc->PageFlipFailed();
     }
   }
   // For each element in |old_plane_list|, if it hasn't been reclaimed (by
   // this or any other HDPL), clear the overlay contents.
   for (HardwareDisplayPlane* plane : plane_list->old_plane_list) {
     if (!plane->in_use()) {
@@ skipping 31 matching lines @@
   } else {
     plane_list->legacy_page_flips.back().planes.push_back(
         HardwareDisplayPlaneList::PageFlipInfo::Plane(
             hw_plane->plane_id(), overlay.buffer->GetFramebufferId(),
             overlay.display_bounds, src_rect));
   }
   return true;
 }
 
 }  // namespace ui