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

ui/ozone/common/gpu/ozone_gpu_messages.h

Index: ui/ozone/common/gpu/ozone_gpu_messages.h
diff --git a/ui/ozone/common/gpu/ozone_gpu_messages.h b/ui/ozone/common/gpu/ozone_gpu_messages.h
index 14d2a10761e11063e18921471765292c37023570..a00a2197a4c85942579ae6cbb63537e280a56807 100644
--- a/ui/ozone/common/gpu/ozone_gpu_messages.h
+++ b/ui/ozone/common/gpu/ozone_gpu_messages.h
@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "base/file_descriptor_posix.h"
+#include "base/tuple.h"
 #include "ipc/ipc_message_macros.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/geometry/point.h"
@@ -22,6 +23,8 @@
 
 #define IPC_MESSAGE_START OzoneGpuMsgStart
 
+typedef std::vector<Tuple<uint16_t, uint16_t, uint16_t>> GammaRampRGBData;
+
 IPC_ENUM_TRAITS_MAX_VALUE(ui::DisplayConnectionType,
                           ui::DISPLAY_CONNECTION_TYPE_LAST)
 
@@ -102,6 +105,11 @@ IPC_MESSAGE_CONTROL0(OzoneGpuMsg_TakeDisplayControl)
 // Let other entity control the display
 IPC_MESSAGE_CONTROL0(OzoneGpuMsg_RelinquishDisplayControl)
 
+// Provides the gamma ramp for display adjustment.
+IPC_MESSAGE_CONTROL2(OzoneGpuMsg_SetGammaRamp,
+                     int64_t,  // display ID,

[dcheng, 2015/04/29 21:43:01]

Nit: make this comment consistent with the conventions in the rest of this file

+                     GammaRampRGBData /* lut */)
+
 //------------------------------------------------------------------------------
 // Browser Messages
 // These messages are from the GPU to the browser process.