Added a debug info UI for Blimp

blimp/net/blimp_connection_statistics.cc

Index: blimp/net/blimp_connection_statistics.cc
diff --git a/blimp/net/blimp_connection_statistics.cc b/blimp/net/blimp_connection_statistics.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1c7d3983717c9ff0b13f56c0a7bffbef6492cdc9
--- /dev/null
+++ b/blimp/net/blimp_connection_statistics.cc
@@ -0,0 +1,47 @@
+// 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.
+
+#include <blimp/net/blimp_connection_statistics.h>
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/threading/thread.h"
+
+namespace blimp {
+
+BlimpConnectionStatistics::BlimpConnectionStatistics(
+    const scoped_refptr<base::TaskRunner>& main_thread_task_runner)
+    : main_thread_task_runner_(main_thread_task_runner), weak_factory_(this) {}
+
+BlimpConnectionStatistics::~BlimpConnectionStatistics() {}
+
+void BlimpConnectionStatistics::Add(EventType type, int data) {
+  main_thread_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&BlimpConnectionStatistics::AddOnMain,
+                            weak_factory_.GetWeakPtr(), type, data));
+}
+
+void BlimpConnectionStatistics::Increment(EventType type) {
+  main_thread_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&BlimpConnectionStatistics::IncrementOnMain,
+                            weak_factory_.GetWeakPtr(), type));
+}
+
+void BlimpConnectionStatistics::AddOnMain(EventType type, int data) {
+  DCHECK(main_thread_task_runner_->RunsTasksOnCurrentThread());
+  statistics_[type] += data;
+}
+
+void BlimpConnectionStatistics::IncrementOnMain(EventType type) {

[Kevin M, 2016/05/20 01:02:03]

No need for this function; increment is basically addition w/1.

[shaktisahu, 2016/05/22 22:36:57]

Ok.

+  DCHECK(main_thread_task_runner_->RunsTasksOnCurrentThread());
+  statistics_[type]++;
+}
+
+void BlimpConnectionStatistics::GetDebugInfo(
+    const base::Callback<void(StatisticsMap stats)>& callback) {
+  DCHECK(main_thread_task_runner_->RunsTasksOnCurrentThread());
+  VLOG(0) << "statistics_" << statistics_[BYTES_RECEIVED];

[Kevin M, 2016/05/20 01:02:03]

This logging line doesn't look very useful; remove it?

[shaktisahu, 2016/05/22 22:36:57]

Done.

+  callback.Run(statistics_);
+}
+
+}  // namespace blimp