Exposing NQE on the Browser UI thread

chrome/browser/net/nqe/ui_network_quality_estimator_service_test_util.h

Index: chrome/browser/net/nqe/ui_network_quality_estimator_service_test_util.h
diff --git a/chrome/browser/net/nqe/ui_network_quality_estimator_service_test_util.h b/chrome/browser/net/nqe/ui_network_quality_estimator_service_test_util.h
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+++ b/chrome/browser/net/nqe/ui_network_quality_estimator_service_test_util.h
@@ -0,0 +1,25 @@
+// 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 CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_TEST_UTIL_H_
+#define CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_TEST_UTIL_H_
+
+#include "net/nqe/network_quality_estimator.h"
+
+namespace chrome_browser_net {
+
+namespace test_util {
+
+// Forces NetworkQualityEstimator to report |type| to all its
+// EffectiveConnectionTypeObservers.
+// This blocks execution on the calling thread until the IO task runs and
+// replies.
+void OverrideEffectiveConnectionTypeAndWait(
+    net::NetworkQualityEstimator::EffectiveConnectionType type);
+
+}  // namespace test_util
+
+}  // namespace chrome_browser_net
+
+#endif  // CHROME_BROWSER_NET_NQE_UI_NETWORK_QUALITY_ESTIMATOR_SERVICE_TEST_UTIL_H_