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

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

Index: ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
index 60b335bfaa429bcc04c425c8af45ec900b8b6dce..e2a66b1556910cedb080d5affa88df33beaa3e11 100644
--- a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
+++ b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
@@ -236,6 +236,28 @@ void DrmGpuDisplayManager::RemoveGraphicsDevice(const base::FilePath& path) {
   devices_.erase(it);
 }
 
+void DrmGpuDisplayManager::SetGammaRamp(int64_t id,
+                                        const std::vector<uint16_t>& r,
+                                        const std::vector<uint16_t>& g,
+                                        const std::vector<uint16_t>& b) {
+  DrmDisplaySnapshot* display = FindDisplaySnapshot(id);
+  if (!display) {
+    LOG(ERROR) << "There is no display with ID " << id;
+    return;
+  }
+
+  if (r.size() != g.size() || g.size() != b.size()) {
+    LOG(ERROR) << "Gamma ramp channels must all the same length.";
+  }
+
+  if (!display->drm()->SetGammaRamp(
+          display->crtc(), r.size(), const_cast<uint16_t*>(&r[0]),
+          const_cast<uint16_t*>(&g[0]), const_cast<uint16_t*>(&b[0]))) {
+    LOG(ERROR) << "Failed to set gamma ramp for display: crtc_id = "
+               << display->crtc() << " size = " << r.size();
+  }
+}
+
 DrmDisplaySnapshot* DrmGpuDisplayManager::FindDisplaySnapshot(int64_t id) {
   for (size_t i = 0; i < cached_displays_.size(); ++i)
     if (cached_displays_[i]->display_id() == id)