[poc] curve-filter

cc/layers/picture_image_layer.h

Index: cc/layers/picture_image_layer.h
diff --git a/cc/layers/picture_image_layer.h b/cc/layers/picture_image_layer.h
index fd3c1a22d9a63e72854e739d55521d9d85995403..75379ed1f40d41252dc9a2c77c0db4905464564f 100644
--- a/cc/layers/picture_image_layer.h
+++ b/cc/layers/picture_image_layer.h
@@ -14,6 +14,7 @@
 #include "skia/ext/refptr.h"
 #include "ui/gfx/geometry/size.h"
 
+class SkColorFilter;
 class SkImage;
 
 namespace cc {
@@ -22,7 +23,8 @@ class CC_EXPORT PictureImageLayer : public PictureLayer, ContentLayerClient {
  public:
   static scoped_refptr<PictureImageLayer> Create(const LayerSettings& settings);
 
-  void SetImage(skia::RefPtr<const SkImage> image);
+  void SetImage(skia::RefPtr<const SkImage> image,
+                skia::RefPtr<SkColorFilter> transform = nullptr);
 
   // Layer implementation.
   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
@@ -43,6 +45,7 @@ class CC_EXPORT PictureImageLayer : public PictureLayer, ContentLayerClient {
   ~PictureImageLayer() override;
 
   skia::RefPtr<const SkImage> image_;
+  skia::RefPtr<SkColorFilter> transform_;
 
   DISALLOW_COPY_AND_ASSIGN(PictureImageLayer);
 };