Update changelog with information on WebSocket compression
Closes #24980
BUG= https://github.com/dart-lang/sdk/issues/24980
R=mit@google.com
Review URL: https://codereview.chromium.org/1587043002 .
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e1ceff..a3fffad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,12 @@
* `dart:io`
* `Platform` added an `isIOS` getter and `Platform.operatingSystem` may now
return `ios`.
+ * Added support for WebSocket compression as standardized in RFC 7692. By
+ default compression is turned on for all WebSocket connections. The
+ optionally named parameter `compression` on the methods `WebSocket.connect`,
+ `WebSocket.fromUpgradedSocket`, and `WebSocketTransformer.upgrade` and on
+ the `WebSocketTransformer` constructor is used to select the compression
+ options.
### Tool changes
