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

ui/ozone/platform/drm/gpu/drm_device.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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 16 matching lines @@
 
 struct SkImageInfo;
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace ui {
 
 class HardwareDisplayPlaneManager;
-struct GammaRampRGBEntry;
 
 // Wraps DRM calls into a nice interface. Used to provide different
 // implementations of the DRM calls. For the actual implementation the DRM API
 // would be called. In unit tests this interface would be stubbed.
 class OZONE_EXPORT DrmDevice : public base::RefCountedThreadSafe<DrmDevice> {
  public:
   typedef base::Callback<void(unsigned int /* frame */,
                               unsigned int /* seconds */,
                               unsigned int /* useconds */)> PageFlipCallback;
 
@@ skipping 106 matching lines @@
   virtual bool MapDumbBuffer(uint32_t handle, size_t size, void** pixels);
 
   virtual bool UnmapDumbBuffer(void* pixels, size_t size);
 
   virtual bool CloseBufferHandle(uint32_t handle);
 
   virtual bool CommitProperties(drmModePropertySet* properties,
                                 uint32_t flags,
                                 const PageFlipCallback& callback);
 
-  // Set the gamma ramp for |crtc_id| to reflect the ramps in |lut|.
-  virtual bool SetGammaRamp(uint32_t crtc_id,
-                            const std::vector<GammaRampRGBEntry>& lut);
-
   // Drm master related
   virtual bool SetMaster();
   virtual bool DropMaster();
 
   int get_fd() const { return file_.GetPlatformFile(); }
 
   base::FilePath device_path() const { return device_path_; }
 
   HardwareDisplayPlaneManager* plane_manager() { return plane_manager_.get(); }
 
@@ skipping 21 matching lines @@
   scoped_refptr<IOWatcher> watcher_;
 
   scoped_refptr<PageFlipManager> page_flip_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmDevice);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_