cc: Remove PicturePileBase

cc/resources/picture_pile_impl.cc

Index: cc/resources/picture_pile_impl.cc
diff --git a/cc/resources/picture_pile_impl.cc b/cc/resources/picture_pile_impl.cc
index 7514e075ab823136351c25ce68f41cf709c1b330..6800cef19d32222d82300eaee7d15af6aaba48fb 100644
--- a/cc/resources/picture_pile_impl.cc
+++ b/cc/resources/picture_pile_impl.cc
@@ -20,11 +20,6 @@ scoped_refptr<PicturePileImpl> PicturePileImpl::Create() {
   return make_scoped_refptr(new PicturePileImpl);
 }
 
-scoped_refptr<PicturePileImpl> PicturePileImpl::CreateFromOther(
-    const PicturePileBase* other) {
-  return make_scoped_refptr(new PicturePileImpl(other));
-}
-
 PicturePileImpl::PicturePileImpl()
     : background_color_(SK_ColorTRANSPARENT),
       contents_opaque_(false),
@@ -39,7 +34,7 @@ PicturePileImpl::PicturePileImpl()
       should_attempt_to_use_distance_field_text_(false) {
 }
 
-PicturePileImpl::PicturePileImpl(const PicturePileBase* other)
+PicturePileImpl::PicturePileImpl(const PicturePile* other)
     : picture_map_(other->picture_map_),
       tiling_(other->tiling_),
       background_color_(other->background_color_),