Rename leg -> dart2js.

dart/tests/co19/co19-leg.status

Index: dart/tests/co19/co19-leg.status
diff --git a/dart/tests/co19/co19-leg.status b/dart/tests/co19/co19-leg.status
index 07d4d12e468eca6d8ad493c808418532dc3e8129..eb19073df5aa109cff834a8dae3cb8766ae99015 100644
--- a/dart/tests/co19/co19-leg.status
+++ b/dart/tests/co19/co19-leg.status
@@ -2,13 +2,13 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-[ $component == leg && $system == macos ]
+[ $component == dart2js && $system == macos ]
 LibTest/core/Math/acos_A01_t01: Fail, OK
 LibTest/core/Math/asin_A01_t01: Fail, OK
 LibTest/core/Math/atan_A01_t01: Fail, OK
 
 
-[ $component == leg ]
+[ $component == dart2js ]
 # These classes have been removed, co19 issue 79.
 LibTest/core/Dispatcher/*: Fail, OK
 LibTest/core/List/every_A03_t01: Fail, OK
@@ -24,7 +24,7 @@ LibTest/core/SendPort/*: Fail, OK
 LibTest/core/ReceivePort/*: Fail, OK
 
 
-[ $component == leg && $checked ]
+[ $component == dart2js && $checked ]
 # Leg does not support checked mode yet.
 *: Skip
 
@@ -33,7 +33,7 @@ LibTest/core/ReceivePort/*: Fail, OK
 *: Skip
 
 
-[ $component == leg ]
+[ $component == dart2js ]
 Language/10_Expressions/01_Constants_A17_t03: Skip # Cycle reference. Times out.