Move MaxScrollOffset to property_trees

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index 7c0697d25cb7ad36e01f225902cab4787f8b515c..f38555a3a5ae9aafed5334bb268813051534b3e8 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -129,6 +129,9 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   void SetBounds(const gfx::Size& bounds);
   gfx::Size bounds() const { return bounds_; }
 
+  // This function is for property tree builder
+  gfx::Vector2dF bounds_delta() const { return gfx::Vector2dF(); }
+
   void SetMasksToBounds(bool masks_to_bounds);
   bool masks_to_bounds() const { return masks_to_bounds_; }
 
@@ -271,6 +274,8 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
 
   void SetScrollClipLayerId(int clip_layer_id);
   bool scrollable() const { return scroll_clip_layer_id_ != INVALID_ID; }
+  Layer* scroll_clip_layer() const;
+  int scroll_clip_layer_id() const { return scroll_clip_layer_id_; }
 
   void SetUserScrollable(bool horizontal, bool vertical);
   bool user_scrollable_horizontal() const {