CC Animation: Erase cc::LayerSettings everywhere.

cc/layers/io_surface_layer.h

Index: cc/layers/io_surface_layer.h
diff --git a/cc/layers/io_surface_layer.h b/cc/layers/io_surface_layer.h
index a88492fb0b4370ab6e93a8f2aba0a72395beaea8..c0883094f44dee76b8159ab3a9ae4f6c7e23297e 100644
--- a/cc/layers/io_surface_layer.h
+++ b/cc/layers/io_surface_layer.h
@@ -15,7 +15,7 @@ namespace cc {
 
 class CC_EXPORT IOSurfaceLayer : public Layer {
  public:
-  static scoped_refptr<IOSurfaceLayer> Create(const LayerSettings& settings);
+  static scoped_refptr<IOSurfaceLayer> Create();
 
   void SetIOSurfaceProperties(uint32_t io_surface_id, const gfx::Size& size);
 
@@ -25,7 +25,7 @@ class CC_EXPORT IOSurfaceLayer : public Layer {
 
  protected:
   bool HasDrawableContent() const override;
-  explicit IOSurfaceLayer(const LayerSettings& settings);
+  IOSurfaceLayer();
 
  private:
   ~IOSurfaceLayer() override;