CC Animation: Erase cc::LayerSettings everywhere.

cc/layers/picture_layer.h

Index: cc/layers/picture_layer.h
diff --git a/cc/layers/picture_layer.h b/cc/layers/picture_layer.h
index b7e7152380205d956f7ce353b2d8582ce1607459..248eee8db920f2d8e0f74da38a522b726402b9ae 100644
--- a/cc/layers/picture_layer.h
+++ b/cc/layers/picture_layer.h
@@ -19,8 +19,7 @@ class ResourceUpdateQueue;
 
 class CC_EXPORT PictureLayer : public Layer {
  public:
-  static scoped_refptr<PictureLayer> Create(const LayerSettings& settings,
-                                            ContentLayerClient* client);
+  static scoped_refptr<PictureLayer> Create(ContentLayerClient* client);
 
   void ClearClient();
 
@@ -45,10 +44,9 @@ class CC_EXPORT PictureLayer : public Layer {
   }
 
  protected:
-  PictureLayer(const LayerSettings& settings, ContentLayerClient* client);
+  explicit PictureLayer(ContentLayerClient* client);
   // Allow tests to inject a recording source.
-  PictureLayer(const LayerSettings& settings,
-               ContentLayerClient* client,
+  PictureLayer(ContentLayerClient* client,
                scoped_ptr<DisplayListRecordingSource> source);
   ~PictureLayer() override;