Use short array syntax in method signatures

test/codegen/expect/covariance.js

Index: test/codegen/expect/covariance.js
diff --git a/test/codegen/expect/covariance.js b/test/codegen/expect/covariance.js
index 0ee118bfe2e80cf3b76bd1e97cadf8b27b0715af..0299abe2cffa0f592aa6cd878edd3d03de6dfa2d 100644
--- a/test/codegen/expect/covariance.js
+++ b/test/codegen/expect/covariance.js
@@ -19,8 +19,8 @@ var core = dart.import(core);
     }
     dart.setSignature(Foo, {
       methods: () => ({
-        add: dart.functionType(dart.dynamic, [T]),
-        forEach: dart.functionType(dart.dynamic, [dart.functionType(dart.void, [T])])
+        add: [dart.dynamic, [T]],
+        forEach: [dart.dynamic, [dart.functionType(dart.void, [T])]]
       })
     });
     return Foo;
@@ -36,7 +36,7 @@ var core = dart.import(core);
     }
   }
   dart.setSignature(Bar, {
-    methods: () => ({add: dart.functionType(dart.dynamic, [core.int])})
+    methods: () => ({add: [dart.dynamic, [core.int]]})
   });
   function main() {
     let foo = new Bar();