HDR: Do nonlinear blending in the compositor

content/browser/compositor/gpu_process_transport_factory.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 CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 #define CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 47 matching lines @@
   // ui::ContextFactoryPrivate implementation.
   std::unique_ptr<ui::Reflector> CreateReflector(ui::Compositor* source,
                                                  ui::Layer* target) override;
   void RemoveReflector(ui::Reflector* reflector) override;
   void RemoveCompositor(ui::Compositor* compositor) override;
   cc::FrameSinkId AllocateFrameSinkId() override;
   void SetDisplayVisible(ui::Compositor* compositor, bool visible) override;
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
   void SetDisplayColorSpace(ui::Compositor* compositor,
-                            const gfx::ColorSpace& color_space) override;
+                            const gfx::ColorSpace& blending_color_space,
+                            const gfx::ColorSpace& output_color_space) override;
   void SetAuthoritativeVSyncInterval(ui::Compositor* compositor,
                                      base::TimeDelta interval) override;
   void SetDisplayVSyncParameters(ui::Compositor* compositor,
                                  base::TimeTicks timebase,
                                  base::TimeDelta interval) override;
   void SetOutputIsSecure(ui::Compositor* compositor, bool secure) override;
 
   // ImageTransportFactory implementation.
   ui::ContextFactory* GetContextFactory() override;
   ui::ContextFactoryPrivate* GetContextFactoryPrivate() override;
@@ skipping 51 matching lines @@
   gpu::GpuChannelEstablishFactory* gpu_channel_factory_ = nullptr;
 
   base::WeakPtrFactory<GpuProcessTransportFactory> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessTransportFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_PROCESS_TRANSPORT_FACTORY_H_