Move FF and Canary to green on travis

pkg/dev_compiler/lib/js/es6/dart_sdk.js

Index: pkg/dev_compiler/lib/js/es6/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/es6/dart_sdk.js b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
index 059648cde66dbdd24058b79127a6b8a828b65d35..ba30bab869f17d5ce45c29406ee6e23a3e3b3d5f 100644
--- a/pkg/dev_compiler/lib/js/es6/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
@@ -28396,14 +28396,12 @@ collection.SplayTreeSet$ = dart.generic(E => {
     }),
     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()]),