Added a debug info UI for Blimp

blimp/net/blimp_connection_details.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 BLIMP_NET_BLIMP_CONNECTION_DETAILS_H_
+#define BLIMP_NET_BLIMP_CONNECTION_DETAILS_H_
+
+#include "base/macros.h"
+#include "blimp/net/blimp_net_export.h"
+
+namespace blimp {
+
+class NetworkActivityObserver {

[Kevin M, 2016/05/10 23:54:24]

Push a NetLog object down the layers to collect byte transfer events (via
AddByteTransferEvent) and have a NetLog::ThreadSafeObserver subclass add the
events to a cumulative total.

[shaktisahu, 2016/05/11 22:08:00]

Apparently the NetLog::ThreadSafeObserver is deprecated and NetLog is used just
for logging purposes and not making any application state related decisions. I
checked with the owner too. Any other recommendations? There is
NetworkActivityMonitor which is very simple to use but it works on lower layer
and I can't reset the byte counter to zero when I navigate away to another page.

+ public:
+  virtual void OnPacketReceived(int bytes) = 0;
+  virtual void OnPacketSent(int bytes) = 0;
+};
+
+// Collects network traffic information like packets received and sent over a
+// blimp a network connection.
+class BLIMP_NET_EXPORT BlimpConnectionDetails {
+ public:
+  BlimpConnectionDetails(NetworkActivityObserver* observer);
+
+  ~BlimpConnectionDetails();
+
+  void OnPacketReceived(int bytes);
+  void OnPacketSent(int bytes);
+
+  void ResetStats();
+
+ protected:
+ private:
+  int bytes_received_;
+  int bytes_sent_;
+  NetworkActivityObserver* observer_ = nullptr;
+
+  DISALLOW_COPY_AND_ASSIGN(BlimpConnectionDetails);
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_NET_BLIMP_CONNECTION_DETAILS_H_