Merge pull request ipfs/kubo#4661 from ipfs/extract/chunk

Extract: importers/chunk module as go-ipfs-chunker

This commit was moved from ipfs/kubo@990e4df

gateway/core/corehttp/gateway_handler.go

@@ -16,7 +16,6 @@ import (
 	coreapi "github.com/ipfs/go-ipfs/core/coreapi"
 	coreiface "github.com/ipfs/go-ipfs/core/coreapi/interface"
 	"github.com/ipfs/go-ipfs/importer"
-	chunk "github.com/ipfs/go-ipfs/importer/chunk"
 	dag "github.com/ipfs/go-ipfs/merkledag"
 	dagutils "github.com/ipfs/go-ipfs/merkledag/utils"
 	path "github.com/ipfs/go-ipfs/path"
@@ -25,6 +24,7 @@ import (
 
 	humanize "gx/ipfs/QmPSBJL4momYnE7DcUyk2DVhD6rH488ZmHBGLbxNdhU44K/go-humanize"
 	routing "gx/ipfs/QmTiWLZ6Fo5j4KcTVutZJ5KWRRJrbxzmxA4td8NfEdrPh7/go-libp2p-routing"
+	chunker "gx/ipfs/QmWo8jYc19ppG7YoTsrr2kEtLRbARTJho5oNXFTR6B7Peq/go-ipfs-chunker"
 	cid "gx/ipfs/QmcZfnkapfECQGcLZaf9B79NRg7cRa9EnZh4LSbkCzwNvY/go-cid"
 	ipld "gx/ipfs/Qme5bWv7wtjUNGsK2BNGVUFPKiuxWrsqrtvYwCLRw8YFES/go-ipld-format"
 	multibase "gx/ipfs/QmexBtiTTEwwn42Yi6ouKt6VqzpA6wjJgiW1oh9VfaRrup/go-multibase"
@@ -58,7 +58,7 @@ func (i *gatewayHandler) newDagFromReader(r io.Reader) (ipld.Node, error) {
 	// return ufs.AddFromReader(i.node, r.Body)
 	return importer.BuildDagFromReader(
 		i.node.DAG,
-		chunk.DefaultSplitter(r))
+		chunker.DefaultSplitter(r))
 }
 
 // TODO(btc): break this apart into separate handlers using a more expressive muxer