Load and apply a vcgt table from an ICC file to the internal display

ui/ozone/platform/drm/gpu/drm_device.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/drm/gpu/drm_device.h"
 
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <unistd.h>
 #include <xf86drm.h>
@@ skipping 486 matching lines @@
 bool DrmDevice::SetMaster() {
   DCHECK(file_.IsValid());
   return (drmSetMaster(file_.GetPlatformFile()) == 0);
 }
 
 bool DrmDevice::DropMaster() {
   DCHECK(file_.IsValid());
   return (drmDropMaster(file_.GetPlatformFile()) == 0);
 }
 
+bool DrmDevice::SetGammaRamp(uint32_t crtc_id,
+                             const std::vector<uint16_t>& r,
+                             const std::vector<uint16_t>& g,
+                             const std::vector<uint16_t>& b) {
+  DCHECK(file_.IsValid());
+  TRACE_EVENT0("drm", "DrmDevice::SetGamma");
+  return (drmModeCrtcSetGamma(file_.GetPlatformFile(), crtc_id, r.size(),
+                              const_cast<uint16_t*>(&r[0]),
+                              const_cast<uint16_t*>(&g[0]),
+                              const_cast<uint16_t*>(&b[0])) == 0);
+}
+
 }  // namespace ui