Ignore Jetty deprecation that will give us the behavior we want

Author: ejona86

servlet/src/jettyTest/java/io/grpc/servlet/JettyTransportTest.java

@@ -77,9 +77,7 @@ public void start(ServerListener listener) throws IOException {
         ServerConnector sc = (ServerConnector) jettyServer.getConnectors()[0];
         HttpConfiguration httpConfiguration = new HttpConfiguration();
 
-        // Must be set for several tests to pass, so that the request handling can begin before
-        // content arrives.
-        httpConfiguration.setDelayDispatchUntilContent(false);
+        setDelayDispatchUntilContent(httpConfiguration);
 
         HTTP2CServerConnectionFactory factory =
                 new HTTP2CServerConnectionFactory(httpConfiguration);
@@ -129,6 +127,16 @@ public List<InternalInstrumented<InternalChannelz.SocketStats>> getListenSocketS
     };
   }
 
+  // The future default appears to be false as people are supposed to be migrate to
+  // EagerContentHandler, but the default is still true. Seems they messed up the migration
+  // process here by not flipping the default.
+  @SuppressWarnings("removal")
+  private static void setDelayDispatchUntilContent(HttpConfiguration httpConfiguration) {
+    // Must be set for several tests to pass, so that the request handling can begin before
+    // content arrives.
+    httpConfiguration.setDelayDispatchUntilContent(false);
+  }
+
   @Override
   protected InternalServer newServer(int port,
                                      List<ServerStreamTracer.Factory> streamTracerFactories) {