Remove buffer.Prependable.UsedBytes

It is the same as buffer.Prependable.View.

PiperOrigin-RevId: 213064166
Change-Id: Ib33b8a2c4da864209d9a0be0a1c113be10b520d3

1 files changed, 11 insertions, 19 deletions

diff --git a/pkg/tcpip/buffer/prependable.go b/pkg/tcpip/buffer/prependable.go
index bca23ef68..c5dd2819f 100644
--- a/pkg/tcpip/buffer/prependable.go
+++ b/pkg/tcpip/buffer/prependable.go
@@ -41,28 +41,9 @@ func NewPrependableFromView(v View) Prependable {
 	return Prependable{buf: v, usedIdx: 0}
 }
 
-// Prepend reserves the requested space in front of the buffer, returning a
-// slice that represents the reserved space.
-func (p *Prependable) Prepend(size int) []byte {
-	if size > p.usedIdx {
-		return nil
-	}
-
-	p.usedIdx -= size
-	return p.buf[p.usedIdx:][:size:size]
-}
-
 // View returns a View of the backing buffer that contains all prepended
 // data so far.
 func (p Prependable) View() View {
-	v := p.buf
-	v.TrimFront(p.usedIdx)
-	return v
-}
-
-// UsedBytes returns a slice of the backing buffer that contains all prepended
-// data so far.
-func (p Prependable) UsedBytes() []byte {
 	return p.buf[p.usedIdx:]
 }
 
@@ -70,3 +51,14 @@ func (p Prependable) UsedBytes() []byte {
 func (p Prependable) UsedLength() int {
 	return len(p.buf) - p.usedIdx
 }
+
+// Prepend reserves the requested space in front of the buffer, returning a
+// slice that represents the reserved space.
+func (p *Prependable) Prepend(size int) []byte {
+	if size > p.usedIdx {
+		return nil
+	}
+
+	p.usedIdx -= size
+	return p.View()[:size:size]
+}