Revert of ash: reset color management when new screens are hotplugged

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

 // Copyright 2015 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_display.h"
 
 #include <xf86drmMode.h>
 
 #include "base/macros.h"
 #include "ui/display/types/gamma_ramp_rgb_entry.h"
@@ skipping 156 matching lines @@
 
   return drm_->SetProperty(
       connector_, hdcp_property->prop_id,
       GetContentProtectionValue(hdcp_property.get(), state));
 }
 
 void DrmDisplay::SetColorCorrection(
     const std::vector<GammaRampRGBEntry>& degamma_lut,
     const std::vector<GammaRampRGBEntry>& gamma_lut,
     const std::vector<float>& correction_matrix) {
-  if (!drm_->SetColorCorrection(crtc_, degamma_lut, gamma_lut,
-                                correction_matrix)) {
-    LOG(ERROR) << "Failed to set color correction for display: crtc_id = "
-               << crtc_;
+  if (degamma_lut.empty()) {
+    if (!drm_->SetGammaRamp(crtc_, gamma_lut)) {
+      LOG(ERROR) << "Failed to set gamma ramp for display: crtc_id = " << crtc_
+                 << " size = " << gamma_lut.size();
+    }
+  } else {
+    if (!drm_->SetColorCorrection(crtc_, degamma_lut, gamma_lut,
+                                  correction_matrix)) {
+      LOG(ERROR) << "Failed to set color correction for display: crtc_id = "
+                 << crtc_;
+    }
   }
 }
 
 }  // namespace ui