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

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

Index: ui/ozone/platform/drm/test/mock_drm_device.h
diff --git a/ui/ozone/platform/drm/test/mock_drm_device.h b/ui/ozone/platform/drm/test/mock_drm_device.h
index 7745a05df8d5d688a02ea8a724fbf9913ad25a69..39fb14ea6f9adbb1ccee077f551107db84475858 100644
--- a/ui/ozone/platform/drm/test/mock_drm_device.h
+++ b/ui/ozone/platform/drm/test/mock_drm_device.h
@@ -109,6 +109,10 @@ class MockDrmDevice : public ui::DrmDevice {
   bool CommitProperties(drmModePropertySet* properties,
                         uint32_t flags,
                         const PageFlipCallback& callback) override;
+  bool SetGammaRamp(uint32_t crtc_id,
+                    std::vector<uint16_t> r,
+                    std::vector<uint16_t> g,
+                    std::vector<uint16_t> b) override;
 
  private:
   ~MockDrmDevice() override;