Support removal of DRI platform

ui/gfx/ozone/impl/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/impl/dri_wrapper.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <xf86drmMode.h>
-
-#include "base/logging.h"
-
-namespace gfx {
-
-DriWrapper::DriWrapper(const char* device_path) {
-  fd_ = open(device_path, O_RDWR | O_CLOEXEC);
-}
-
-DriWrapper::~DriWrapper() {
-  if (fd_ >= 0)
-    close(fd_);
-}
-
-drmModeCrtc* DriWrapper::GetCrtc(uint32_t crtc_id) {
-  CHECK(fd_ >= 0);
-  return drmModeGetCrtc(fd_, crtc_id);
-}
-
-void DriWrapper::FreeCrtc(drmModeCrtc* crtc) {
-  drmModeFreeCrtc(crtc);
-}
-
-bool DriWrapper::SetCrtc(uint32_t crtc_id,
-                              uint32_t framebuffer,
-                              uint32_t* connectors,
-                              drmModeModeInfo* mode) {
-  CHECK(fd_ >= 0);
-  return !drmModeSetCrtc(fd_, crtc_id, framebuffer, 0, 0, connectors, 1, mode);
-}
-
-bool DriWrapper::SetCrtc(drmModeCrtc* crtc, uint32_t* connectors) {
-  CHECK(fd_ >= 0);
-  return !drmModeSetCrtc(fd_,
-                         crtc->crtc_id,
-                         crtc->buffer_id,
-                         crtc->x,
-                         crtc->y,
-                         connectors,
-                         1,
-                         &crtc->mode);
-}
-
-bool DriWrapper::AddFramebuffer(const drmModeModeInfo& mode,
-                                     uint8_t depth,
-                                     uint8_t bpp,
-                                     uint32_t stride,
-                                     uint32_t handle,
-                                     uint32_t* framebuffer) {
-  CHECK(fd_ >= 0);
-  return !drmModeAddFB(fd_,
-                       mode.hdisplay,
-                       mode.vdisplay,
-                       depth,
-                       bpp,
-                       stride,
-                       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) {
-  CHECK(fd_ >= 0);
-  return !drmModePageFlip(fd_,
-                          crtc_id,
-                          framebuffer,
-                          DRM_MODE_PAGE_FLIP_EVENT,
-                          data);
-}
-
-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