cps-ir: Give up on code generation of static getters and setters.

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

Index: pkg/compiler/lib/src/js_backend/codegen/codegen.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
index 26fa923ce3ae22657e229bcdea4fef51c5af924d..bdcb7dc015afc541453cf2550d2ea3ef9ae81ebf 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/codegen.dart
@@ -211,6 +211,9 @@ class CodeGenerator extends tree_ir.Visitor<dynamic, js.Expression> {
 
   @override
   js.Expression visitInvokeStatic(tree_ir.InvokeStatic node) {
+    if (node.target is! FunctionElement) {
+      giveup(node, 'static getters and setters are not supported.');
+    }
     return buildStaticInvoke(node.selector,
                              node.target,
                              visitArguments(node.arguments));