Disable super-aliases during incremental compilation.

dart/pkg/compiler/lib/src/js_backend/backend.dart

Index: dart/pkg/compiler/lib/src/js_backend/backend.dart
diff --git a/dart/pkg/compiler/lib/src/js_backend/backend.dart b/dart/pkg/compiler/lib/src/js_backend/backend.dart
index 75238e4afa7d0c13f0826c011d8b72b76aa08c14..2ab846f23117a64a65be91e57f4aceda8eaa1085 100644
--- a/dart/pkg/compiler/lib/src/js_backend/backend.dart
+++ b/dart/pkg/compiler/lib/src/js_backend/backend.dart
@@ -557,8 +557,17 @@ class JavaScriptBackend extends Backend {
   /**
    * Record that [method] is called from a subclass via `super`.
    */
-  void registerAliasedSuperMember(FunctionElement method) {
-    aliasedSuperMembers.add(method);
+  bool maybeRegisterAliasedSuperMember(Element member, Selector selector) {
+    if (selector.isGetter || compiler.hasIncrementalSupport) {
+      // Invoking a super getter isn't supported, this would require changes to
+      // compact field descriptors in the emitter.
+      // We also turn off this optimization in incremental compilation, to
+      // avoid having to regenerate a method just because someone started
+      // calling it through super.
+      return false;
+    }
+    aliasedSuperMembers.add(member);
+    return true;
   }
 
   /**