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

ui/ozone/common/gpu/ozone_gpu_messages.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #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"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/ipc/gfx_param_traits.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
 #include "ui/ozone/ozone_export.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT OZONE_EXPORT
 
 #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)
 
 IPC_STRUCT_TRAITS_BEGIN(ui::DisplayMode_Params)
   IPC_STRUCT_TRAITS_MEMBER(size)
   IPC_STRUCT_TRAITS_MEMBER(is_interlaced)
   IPC_STRUCT_TRAITS_MEMBER(refresh_rate)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(ui::DisplaySnapshot_Params)
@@ skipping 60 matching lines @@
 
 IPC_MESSAGE_CONTROL1(OzoneGpuMsg_RemoveGraphicsDevice,
                      base::FilePath /* device_path */)
 
 // Take control of the display
 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.
 
 // Updates the list of active displays.
 IPC_MESSAGE_CONTROL1(OzoneHostMsg_UpdateNativeDisplays,
                      std::vector<ui::DisplaySnapshot_Params>)
 
 IPC_MESSAGE_CONTROL2(OzoneHostMsg_DisplayConfigured,
                      int64_t /* display_id */,
                      bool /* status */)