Fix for serializing cascades with not-assignment access to properties.

pkg/analyzer/test/src/task/strong/inferred_type_test.dart

Index: pkg/analyzer/test/src/task/strong/inferred_type_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
index 65686c5511a6f7227aec225fda3d709d1a2e82d8..b64a5b664f1e2d707e2bb793b840e0b203d37dba 100644
--- a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
+++ b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
@@ -3570,6 +3570,19 @@ var f = /*warning:UNSAFE_BLOCK_CLOSURE_INFERENCE,
     expect(f.type.toString(), '() → Null');
   }
 
+  test_inferredType_cascade() async {
+    var mainUnit = await checkFileElement('''
+class A {
+  int a;
+  List<int> b;
+  void m() {}
+}
+var v = new A()..a = 1..b.add(2)..m();
+''');
+    var v = mainUnit.topLevelVariables[0];
+    expect(v.type.toString(), 'A');
+  }
+
   test_inferredType_customBinaryOp() async {
     var mainUnit = await checkFileElement('''
 class C {