Handle signature types and fields in kernel_impact

pkg/compiler/lib/src/resolution/members.dart

Index: pkg/compiler/lib/src/resolution/members.dart
diff --git a/pkg/compiler/lib/src/resolution/members.dart b/pkg/compiler/lib/src/resolution/members.dart
index 14c1aab6aa0faf0cd28f1e984a8d103f96f416fd..95631094037e991399034490e3ac11dc8a62b3fd 100644
--- a/pkg/compiler/lib/src/resolution/members.dart
+++ b/pkg/compiler/lib/src/resolution/members.dart
@@ -456,8 +456,14 @@ class ResolverVisitor extends MappingVisitor<ResolutionResult> {
             resolver.constantCompiler.compileConstant(parameter);
       });
     });
+    if (!functionSignature.returnType.isDynamic) {
+      registry.registerTypeUse(
+          new TypeUse.checkedModeCheck(functionSignature.returnType));
+    }
     functionSignature.forEachParameter((ParameterElement element) {
-      registry.registerTypeUse(new TypeUse.checkedModeCheck(element.type));
+      if (!element.type.isDynamic) {
+        registry.registerTypeUse(new TypeUse.checkedModeCheck(element.type));
+      }
     });
   }