net: Cleanup class/struct forward declarations

net/nqe/network_quality_estimator_test_util.h

Index: net/nqe/network_quality_estimator_test_util.h
diff --git a/net/nqe/network_quality_estimator_test_util.h b/net/nqe/network_quality_estimator_test_util.h
index b71b521e16f03d6bb06926900cc854d95a387213..5ab1fed2c3ac31f902c89d0983cef173ec2890fe 100644
--- a/net/nqe/network_quality_estimator_test_util.h
+++ b/net/nqe/network_quality_estimator_test_util.h
@@ -25,11 +25,6 @@ namespace net {
 
 class ExternalEstimateProvider;
 
-namespace test_server {
-struct HttpRequest;
-class HttpResponse;
-}
-
 // Helps in setting the current network type and id.
 class TestNetworkQualityEstimator : public NetworkQualityEstimator {
  public: