Move FF and Canary to green on travis

pkg/dev_compiler/lib/js/amd/dart_sdk.js

Index: pkg/dev_compiler/lib/js/amd/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/amd/dart_sdk.js b/pkg/dev_compiler/lib/js/amd/dart_sdk.js
index 66dab6ede1e594aa9f001e0e6c7a2d5923508261..b809f1f7990ba74a9e1f1eed9d6157dd2ca5b015 100644
--- a/pkg/dev_compiler/lib/js/amd/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/amd/dart_sdk.js
@@ -28398,14 +28398,12 @@ define([], function() {
       }),
       getters: () => ({
         iterator: dart.definiteFunctionType(core.Iterator$(E), []),
-        length: dart.definiteFunctionType(core.int, []),
         first: dart.definiteFunctionType(E, []),
         last: dart.definiteFunctionType(E, []),
         single: dart.definiteFunctionType(E, [])
       }),
       methods: () => ({
         [_compare]: dart.definiteFunctionType(core.int, [E, E]),
-        contains: dart.definiteFunctionType(core.bool, [core.Object]),
         add: dart.definiteFunctionType(core.bool, [E]),
         remove: dart.definiteFunctionType(core.bool, [core.Object]),
         addAll: dart.definiteFunctionType(dart.void, [IterableOfE()]),