cps-ir: Add support for intercepted calls.

tests/compiler/dart2js/js_backend_cps_ir_test.dart

Index: tests/compiler/dart2js/js_backend_cps_ir_test.dart
diff --git a/tests/compiler/dart2js/js_backend_cps_ir_test.dart b/tests/compiler/dart2js/js_backend_cps_ir_test.dart
index 030b214c11c2f357a96a4c80d8c26916459fe547..396e0e85dfcaf6cc173d858501f86f594f578965 100644
--- a/tests/compiler/dart2js/js_backend_cps_ir_test.dart
+++ b/tests/compiler/dart2js/js_backend_cps_ir_test.dart
@@ -18,6 +18,7 @@ import 'js_backend_cps_ir_basic.dart' as basic;
 import 'js_backend_cps_ir_literals.dart' as literals;
 import 'js_backend_cps_ir_operators.dart' as operators;
 import 'js_backend_cps_ir_control_flow.dart' as control_flow;
+import 'js_backend_cps_ir_interceptors.dart' as interceptors;
 
 const String TEST_MAIN_FILE = 'test.dart';
 
@@ -25,7 +26,8 @@ List<TestEntry> tests = <TestEntry>[]
      ..addAll(basic.tests)
      ..addAll(literals.tests)
      ..addAll(control_flow.tests)
-     ..addAll(operators.tests);
+     ..addAll(operators.tests)
+     ..addAll(interceptors.tests);
 
 class TestEntry {
   final String source;