Add network quality change events to net log

net/nqe/event_creator.h

Index: net/nqe/event_creator.h
diff --git a/net/nqe/event_creator.h b/net/nqe/event_creator.h
new file mode 100644
index 0000000000000000000000000000000000000000..70198c948ef11c504c653f9e49cb1cd54a950c8e
--- /dev/null
+++ b/net/nqe/event_creator.h
@@ -0,0 +1,40 @@
+// Copyright 2017 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 NET_NQE_EVENT_CREATOR_H_
+#define NET_NQE_EVENT_CREATOR_H_
+
+#include <stdint.h>
+
+#include "base/time/time.h"
+#include "net/base/net_export.h"

[RyanSturm, 2017/01/10 16:22:37]

not sure if you need net_export

[tbansal1, 2017/01/10 18:27:53]

Done.

+#include "net/nqe/effective_connection_type.h"
+
+namespace net {
+
+class NetLogWithSource;
+
+namespace nqe {
+
+namespace internal {
+
+// Adds effective connection type changed event to the net-internals log.

[RyanSturm, 2017/01/10 16:22:37]

s/effective connection type changed/network quality changed/ for consistency
with the log output.

[tbansal1, 2017/01/10 18:27:53]

Done.

+// |http_rtt| is the estimate of the HTTP RTT. |transport_rtt| is the estimate

[RyanSturm, 2017/01/10 16:22:37]

units for both RTTs in the description (msec?)

[tbansal1, 2017/01/10 18:27:53]

RTTs are in base::TimeDelta. So, units are not required.

+// of the transport RTT. |downstream_throughput_kbps| is the estimate of the
+// downstream throughput (in kilobits per second). |effective_connection_type|
+// is the current estimate of the effective connection type.
+void AddEffectiveConnectionTypeChangedEventToNetLog(
+    const NetLogWithSource& net_log,
+    base::TimeDelta http_rtt,
+    base::TimeDelta transport_rtt,
+    int32_t downstream_throughput_kbps,
+    EffectiveConnectionType effective_connection_type);
+
+}  // namespace internal
+
+}  // namespace nqe
+
+}  // namespace net
+
+#endif  // NET_NQE_EVENT_CREATOR_H_