Remove x-webkit-deflate-frame dead code

Author: abursavich

Diff for: accept_test.go

@@ -419,22 +419,6 @@ func Test_selectDeflate(t *testing.T) {
 			},
 			expOK: true,
 		},
-		// {
-		// 	name:                       "x-webkit-deflate-frame",
-		// 	mode:                       CompressionNoContextTakeover,
-		// 	reqSecWebSocketExtensions:  "x-webkit-deflate-frame; no_context_takeover",
-		// 	respSecWebSocketExtensions: "x-webkit-deflate-frame; no_context_takeover",
-		// 	expCopts: &compressionOptions{
-		// 		clientNoContextTakeover: true,
-		// 		serverNoContextTakeover: true,
-		// 	},
-		// },
-		// {
-		// 	name:                      "x-webkit-deflate/error",
-		// 	mode:                      CompressionNoContextTakeover,
-		// 	reqSecWebSocketExtensions: "x-webkit-deflate-frame; max_window_bits",
-		// 	error:                     true,
-		// },
 	}
 
 	for _, tc := range testCases {

Diff for: compress.go

@@ -12,11 +12,7 @@ import (
 // CompressionMode represents the modes available to the deflate extension.
 // See https://tools.ietf.org/html/rfc7692
 //
-// A compatibility layer is implemented for the older deflate-frame extension used
-// by safari. See https://tools.ietf.org/html/draft-tyoshino-hybi-websocket-perframe-deflate-06
-// It will work the same in every way except that we cannot signal to the peer we
-// want to use no context takeover on our side, we can only signal that they should.
-// But it is currently disabled due to Safari bugs. See https://github.com/nhooyr/websocket/issues/218
+// Works in all browsers except Safari which does not implement the deflate extension.
 type CompressionMode int
 
 const (

Diff for: ws_js.go

@@ -485,12 +485,7 @@ func CloseStatus(err error) StatusCode {
 
 // CompressionMode represents the modes available to the deflate extension.
 // See https://tools.ietf.org/html/rfc7692
-//
-// A compatibility layer is implemented for the older deflate-frame extension used
-// by safari. See https://tools.ietf.org/html/draft-tyoshino-hybi-websocket-perframe-deflate-06
-// It will work the same in every way except that we cannot signal to the peer we
-// want to use no context takeover on our side, we can only signal that they should.
-// It is however currently disabled due to Safari bugs. See https://github.com/nhooyr/websocket/issues/218
+// Works in all browsers except Safari which does not implement the deflate extension.
 type CompressionMode int
 
 const (