Add network quality change events to net log

net/nqe/event_creator.cc

Index: net/nqe/event_creator.cc
diff --git a/net/nqe/event_creator.cc b/net/nqe/event_creator.cc
new file mode 100644
index 0000000000000000000000000000000000000000..381310db7c65cf2eb44dd720947436cb35324fd4
--- /dev/null
+++ b/net/nqe/event_creator.cc
@@ -0,0 +1,61 @@
+// 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.
+
+#include "net/nqe/event_creator.h"
+
+#include <memory>
+#include <utility>
+
+#include "base/bind.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/values.h"
+#include "net/log/net_log_capture_mode.h"
+#include "net/log/net_log_with_source.h"
+
+namespace net {
+
+namespace nqe {
+
+namespace internal {
+
+namespace {
+
+std::unique_ptr<base::Value> EffectiveConnectionTypeChangedNetLogCallback(
+    base::TimeDelta http_rtt,
+    base::TimeDelta transport_rtt,
+    int32_t downstream_throughput_kbps,
+    EffectiveConnectionType effective_connection_type,
+    NetLogCaptureMode capture_mode) {
+  std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
+  dict->SetString("http_rtt",
+                  base::IntToString(http_rtt.InMilliseconds()) + " msec");

[eroman, 2017/01/19 23:57:24]

Rather than setting this as a string parameter, can you set it as an integer
parameter (and include units in the name). For instance:

dict->SetDouble("http_rtt_ms", http_rtt.InMilliseconds());

[tbansal1, 2017/01/20 01:30:34]

Done.

+  dict->SetString("transport_rtt",
+                  base::IntToString(transport_rtt.InMilliseconds()) + " msec");
+  dict->SetString("downstream_throughput",
+                  base::IntToString(downstream_throughput_kbps) + " kbps");

[eroman, 2017/01/19 23:57:24]

Same thing here and throughout.

[tbansal1, 2017/01/20 01:30:34]

Done.

+  dict->SetString("effective_connection_type",
+                  GetNameForEffectiveConnectionType(effective_connection_type));
+  return std::move(dict);
+}
+
+}  // namespace
+
+void AddEffectiveConnectionTypeChangedEventToNetLog(
+    const NetLogWithSource& net_log,
+    base::TimeDelta http_rtt,
+    base::TimeDelta transport_rtt,
+    int32_t downstream_throughput_kbps,
+    EffectiveConnectionType effective_connection_type) {
+  net_log.AddEvent(
+      NetLogEventType::NETWORK_QUALITY_CHANGED,
+      base::Bind(&EffectiveConnectionTypeChangedNetLogCallback, http_rtt,
+                 transport_rtt, downstream_throughput_kbps,
+                 effective_connection_type));
+}
+
+}  // namespace internal
+
+}  // namespace nqe
+
+}  // namespace net