Add support for more advanced color correction

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

Index: ui/ozone/platform/drm/gpu/drm_display.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_display.cc b/ui/ozone/platform/drm/gpu/drm_display.cc
index 076cc59d356302ed9e79a8a47dbaebea13d1e27b..f4b59746859fc63737ccf98a1a4bef7e0937de00 100644
--- a/ui/ozone/platform/drm/gpu/drm_display.cc
+++ b/ui/ozone/platform/drm/gpu/drm_display.cc
@@ -170,10 +170,21 @@ bool DrmDisplay::SetHDCPState(HDCPState state) {
       GetContentProtectionValue(hdcp_property.get(), state));
 }
 
-void DrmDisplay::SetGammaRamp(const std::vector<GammaRampRGBEntry>& lut) {
-  if (!drm_->SetGammaRamp(crtc_, lut)) {
-    LOG(ERROR) << "Failed to set gamma ramp for display: crtc_id = " << crtc_
-               << " size = " << lut.size();
+void DrmDisplay::SetColorCorrection(
+    const std::vector<GammaRampRGBEntry>& degamma_lut,
+    const std::vector<GammaRampRGBEntry>& gamma_lut,
+    const std::vector<float>& correction_matrix) {
+  if (degamma_lut.size() == 0) {

[dcheng, 2016/02/23 20:01:55]

.empty()

[robert.bradford, 2016/02/24 12:34:20]

Done.

+    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_;
+    }
   }
 }