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

ui/ozone/platform/drm/gpu/drm_device.cc

Index: ui/ozone/platform/drm/gpu/drm_device.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_device.cc b/ui/ozone/platform/drm/gpu/drm_device.cc
index b14d2293aab483cbea56a0eb05544e2a95ac747d..49b6f5e6c83982aeebd471747b78d68837b05002 100644
--- a/ui/ozone/platform/drm/gpu/drm_device.cc
+++ b/ui/ozone/platform/drm/gpu/drm_device.cc
@@ -18,7 +18,6 @@
 #include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "third_party/skia/include/core/SkImageInfo.h"
-#include "ui/display/types/gamma_ramp_rgb_entry.h"
 #include "ui/ozone/platform/drm/gpu/drm_util.h"
 #include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager_legacy.h"
 
@@ -585,32 +584,4 @@
   return (drmDropMaster(file_.GetPlatformFile()) == 0);
 }
 
-bool DrmDevice::SetGammaRamp(uint32_t crtc_id,
-                             const std::vector<GammaRampRGBEntry>& lut) {
-  ScopedDrmCrtcPtr crtc = GetCrtc(crtc_id);
-
-  // TODO(robert.bradford) resample the incoming ramp to match what the kernel
-  // expects.
-  if (static_cast<size_t>(crtc->gamma_size) != lut.size()) {
-    LOG(ERROR) << "Gamma table size mismatch: supplied " << lut.size()
-               << " expected " << crtc->gamma_size;
-  }
-
-  std::vector<uint16_t> r, g, b;
-  r.reserve(lut.size());
-  g.reserve(lut.size());
-  b.reserve(lut.size());
-
-  for (size_t i = 0; i < lut.size(); ++i) {
-    r.push_back(lut[i].r);
-    g.push_back(lut[i].g);
-    b.push_back(lut[i].b);
-  }
-
-  DCHECK(file_.IsValid());
-  TRACE_EVENT0("drm", "DrmDevice::SetGamma");
-  return (drmModeCrtcSetGamma(file_.GetPlatformFile(), crtc_id, r.size(), &r[0],
-                              &g[0], &b[0]) == 0);
-}
-
 }  // namespace ui