Make some ErrorCode-s compile-time errors and some just type warnings

compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java

Index: compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java b/compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java
index 15c5f0a3059e9f622f38885b734fa69aeaf8503e..1fdc0ce60549462c3a6f5af76f55165f0348f6b2 100644
--- a/compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java
+++ b/compiler/java/com/google/dart/compiler/backend/js/RuntimeTypeInjector.java
@@ -720,7 +720,8 @@ public class RuntimeTypeInjector {
       SourceInfo src) {
     ClassElement currentClass = enclosingClass;
     Type type = typeNode.getType();
-    switch (TypeKind.of(type)) {
+    TypeKind typeKind = TypeKind.of(type); // XXX

[zundel, 2011/10/31 19:00:28]

what is // XXX for?

+    switch (typeKind) {
       case INTERFACE:
         InterfaceType interfaceType = (InterfaceType) type;
         if (hasTypeParameters(interfaceType.getElement())
@@ -736,6 +737,11 @@ public class RuntimeTypeInjector {
       case DYNAMIC:
         JsProgram program = translationContext.getProgram();
         return program.getTrueLiteral();
+      case FUNCTION_ALIAS:
+        // TODO(scheglov) added because of crash on DynamicTest.dart
+        // it should fail right now, but not crash
+        // I think that improvements in other place allow visitor come here, but crash.
+        return translationContext.getProgram().getFalseLiteral();
       default:
         throw new IllegalStateException("unexpected");
     }