Generate a warning and a runtime error for calls to nonexistent static calls, getters and setters.

lib/compiler/implementation/typechecker.dart

Index: lib/compiler/implementation/typechecker.dart
diff --git a/lib/compiler/implementation/typechecker.dart b/lib/compiler/implementation/typechecker.dart
index fc82c88311e9514d7b9eadbbafb61a800efa1a99..a91b543db87e19fdafe0fe5063e8ca1c833fba0c 100644
--- a/lib/compiler/implementation/typechecker.dart
+++ b/lib/compiler/implementation/typechecker.dart
@@ -395,7 +395,7 @@ class TypeCheckerVisitor implements Visitor<DartType> {
     DartType returnType;
     DartType previousType;
     final FunctionElement element = elements[node];
-    if (Element.isInvalid(element)) return types.dynamicType;
+    if (Element.isUnresolved(element)) return types.dynamicType;
     if (element.kind === ElementKind.GENERATIVE_CONSTRUCTOR ||
         element.kind === ElementKind.GENERATIVE_CONSTRUCTOR_BODY) {
       type = types.dynamicType;
@@ -573,7 +573,7 @@ class TypeCheckerVisitor implements Visitor<DartType> {
           if (memberType.element === compiler.dynamicClass) return null;
           return memberType;
         } else {
-          if (element === null) {
+          if (Element.isUnresolved(element)) {
             fail(node, 'unresolved ${node.selector}');
           } else if (element.kind === ElementKind.FUNCTION) {
             return computeType(element);
@@ -710,7 +710,7 @@ class TypeCheckerVisitor implements Visitor<DartType> {
   }
 
   DartType computeType(Element element) {
-    if (Element.isInvalid(element)) return types.dynamicType;
+    if (Element.isUnresolved(element)) return types.dynamicType;
     DartType result = element.computeType(compiler);
     return (result !== null) ? result : types.dynamicType;
   }