PlzNavigate: properly update NavigationHandle for 204/205 and download responses

content/browser/loader/resource_dispatcher_host_unittest.cc

Index: content/browser/loader/resource_dispatcher_host_unittest.cc
diff --git a/content/browser/loader/resource_dispatcher_host_unittest.cc b/content/browser/loader/resource_dispatcher_host_unittest.cc
index 8dfae97d5e54ab6ba82dc27c46538fdafe87f82c..18befbae6729d3b679155cd904cfa0f3deb6942d 100644
--- a/content/browser/loader/resource_dispatcher_host_unittest.cc
+++ b/content/browser/loader/resource_dispatcher_host_unittest.cc
@@ -2656,6 +2656,7 @@ TEST_P(ResourceDispatcherHostTest, CancelRequestsForContext) {
     // Return some data so that the request is identified as a download
     // and the proper resource handlers are created.
     EXPECT_TRUE(net::URLRequestTestJob::ProcessOnePendingMessage());
+    delegate.WaitForResponseStarted();
     base::RunLoop().RunUntilIdle();
 
     // The UI thread will be informed that the navigation failed with an error