[Cronet] Get Cronet performance test running again

components/cronet/android/test/cronet_test_util.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_CRONET_ANDROID_TEST_CRONET_TEST_UTIL_H_
+#define COMPONENTS_CRONET_ANDROID_TEST_CRONET_TEST_UTIL_H_
+
+#include <jni.h>
+
+namespace cronet {
+
+// Host used in NativeTestServer for SDCH requests.
+extern const char kFakeSdchDomain[];
+// Host used in QuicTestServer.
+extern const char kFakeQuicDomain[];
+
+bool RegisterCronetTestUtil(JNIEnv* env);
+
+}  // namespace cronet
+
+#endif  // COMPONENTS_CRONET_ANDROID_TEST_CRONET_TEST_UTIL_H_