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

ui/ozone/platform/drm/test/mock_drm_device.cc

Index: ui/ozone/platform/drm/test/mock_drm_device.cc
diff --git a/ui/ozone/platform/drm/test/mock_drm_device.cc b/ui/ozone/platform/drm/test/mock_drm_device.cc
index 984089f837dcdd95d1db6560183e41b1739c3ce4..25177cf732ed7b2536e84f5b2aace8de07d05d50 100644
--- a/ui/ozone/platform/drm/test/mock_drm_device.cc
+++ b/ui/ozone/platform/drm/test/mock_drm_device.cc
@@ -220,6 +220,14 @@ bool MockDrmDevice::CommitProperties(drmModePropertySet* properties,
   return false;
 }
 
+bool MockDrmDevice::SetGammaRamp(uint32_t crtc_id,
+                                 uint32_t size,
+                                 uint16_t* r,
+                                 uint16_t* g,
+                                 uint16_t* b) {
+  return true;
+}
+
 void MockDrmDevice::RunCallbacks() {
   while (!callbacks_.empty()) {
     PageFlipCallback callback = callbacks_.front();