Rename unsubscribeOnError to cancelOnError.

sdk/lib/io/secure_server_socket.dart

Index: sdk/lib/io/secure_server_socket.dart
diff --git a/sdk/lib/io/secure_server_socket.dart b/sdk/lib/io/secure_server_socket.dart
index 166b0f2ea8ce4340a8ff3d60a40cde10cdc96417..eaeba54f669fc3128c45d800d3fb8db007973caf 100644
--- a/sdk/lib/io/secure_server_socket.dart
+++ b/sdk/lib/io/secure_server_socket.dart
@@ -66,12 +66,12 @@ class SecureServerSocket extends Stream<SecureSocket> implements ServerSocket {
   StreamSubscription<SecureSocket> listen(void onData(SecureSocket socket),
                                           {void onError(AsyncError error),
                                            void onDone(),
-                                           bool unsubscribeOnError}) {
+                                           bool cancelOnError}) {
     return _socket.map((rawSocket) => new SecureSocket._(rawSocket))
                   .listen(onData,
                           onError: onError,
                           onDone: onDone,
-                          unsubscribeOnError: unsubscribeOnError);
+                          cancelOnError: cancelOnError);
   }
 
   /**
@@ -159,11 +159,11 @@ class RawSecureServerSocket extends Stream<RawSecureSocket> {
   StreamSubscription<RawSecureSocket> listen(void onData(RawSecureSocket s),
                                              {void onError(AsyncError error),
                                               void onDone(),
-                                              bool unsubscribeOnError}) {
+                                              bool cancelOnError}) {
     return _controller.stream.listen(onData,
                                      onError: onError,
                                      onDone: onDone,
-                                     unsubscribeOnError: unsubscribeOnError);
+                                     cancelOnError: cancelOnError);
   }
 
   /**