Renamed StreamSink to EventSink. Renamed signalError to addError.

pkg/http/lib/src/utils.dart

Index: pkg/http/lib/src/utils.dart
diff --git a/pkg/http/lib/src/utils.dart b/pkg/http/lib/src/utils.dart
index 65c47997b1e6991c5cf460fe4ae8659432901262..51b209790903c240bec212a455ea4b1e91129ef2 100644
--- a/pkg/http/lib/src/utils.dart
+++ b/pkg/http/lib/src/utils.dart
@@ -152,10 +152,10 @@ Stream onDone(Stream stream, void onDone()) {
 // TODO(nweiz): remove this when issue 7786 is fixed.
 /// Pipes all data and errors from [stream] into [sink]. When [stream] is done,
 /// [sink] is closed and the returned [Future] is completed.
-Future store(Stream stream, StreamSink sink) {
+Future store(Stream stream, EventSink sink) {
   var completer = new Completer();
   stream.listen(sink.add,
-      onError: sink.signalError,
+      onError: sink.addError,
       onDone: () {
         sink.close();
         completer.complete();
@@ -166,10 +166,10 @@ Future store(Stream stream, StreamSink sink) {
 /// Pipes all data and errors from [stream] into [sink]. Completes [Future] once
 /// [stream] is done. Unlike [store], [sink] remains open after [stream] is
 /// done.
-Future writeStreamToSink(Stream stream, StreamSink sink) {
+Future writeStreamToSink(Stream stream, EventSink sink) {
   var completer = new Completer();
   stream.listen(sink.add,
-      onError: sink.signalError,
+      onError: sink.addError,
       onDone: () => completer.complete());
   return completer.future;
 }
@@ -200,8 +200,8 @@ Pair<Stream, Stream> tee(Stream stream) {
     controller1.add(value);
     controller2.add(value);
   }, onError: (error) {
-    controller1.signalError(error);
-    controller2.signalError(error);
+    controller1.addError(error);
+    controller2.addError(error);
   }, onDone: () {
     controller1.close();
     controller2.close();