Canonical output ordering for constants.

pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart

Index: pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart b/pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart
index 95f0c3b3ee73eef20ddb892d81a082ade3a16157..9e81bca631b5918104099b25a6888581e2cce847 100644
--- a/pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/startup_emitter/model_emitter.dart
@@ -56,6 +56,7 @@ import '../../js_backend/js_backend.dart' show
 import '../../util/uri_extras.dart' show
     relativize;
 
+import '../constant_ordering.dart' show deepCompareConstants;
 import '../headers.dart';
 import '../js_emitter.dart' show
     NativeEmitter;
@@ -140,9 +141,9 @@ class ModelEmitter {
     // which compresses a tiny bit better.
     int r = namer.constantLongName(a).compareTo(namer.constantLongName(b));
     if (r != 0) return r;
-    // Resolve collisions in the long name by using the constant name (i.e. JS
-    // name) which is unique.
-    return namer.constantName(a).compareTo(namer.constantName(b));
+
+    // Resolve collisions in the long name by using a structural order.
+    return deepCompareConstants(a, b);
   }
 
   js.Expression generateStaticClosureAccess(FunctionElement element) {