Handle assignability for Send and SendSet

tests/compiler/dart2js/analyze_api_test.dart

Index: tests/compiler/dart2js/analyze_api_test.dart
diff --git a/tests/compiler/dart2js/analyze_api_test.dart b/tests/compiler/dart2js/analyze_api_test.dart
index 93ae53ce7e1f3797d9ce099bce7b1a611f2bed43..26f0475f86b7296b528e500ee2bc30556374e129 100644
--- a/tests/compiler/dart2js/analyze_api_test.dart
+++ b/tests/compiler/dart2js/analyze_api_test.dart
@@ -27,8 +27,15 @@ import '../../../sdk/lib/_internal/libraries.dart';
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
 const Map<String,List<String>> WHITE_LIST = const {
-  'html_dart2js.dart': const ['Warning: Using "new Symbol"', // Issue 10565.
-                              'Warning: unreachable code'], // Issue 10617.
+  'html_dart2js.dart':
+      const ['Warning: Using "new Symbol"', // Issue 10565.
+             'Warning: unreachable code', // Issue 10617.
+             // Issue 10688:
+             'Warning: no property named',
+             'Warning: WindowBase is not assignable to EventTarget',
+             "Warning: 'UnsupportedError' is not callable",
+             "Warning: no method named getBoundingClientRect",
+             "Warning: no operator [] in class Iterable"],
 };
 
 class CollectingDiagnosticHandler extends FormattingDiagnosticHandler {