Reland: 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..b61d23b718aec45a70451f66cc4a33a3edadbad7
--- /dev/null
+++ b/blimp/net/blimp_connection_statistics.cc
@@ -0,0 +1,26 @@
+// 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"
+
+namespace blimp {
+
+BlimpConnectionStatistics::BlimpConnectionStatistics()
+    : histogram_(
+          base::SparseHistogram::FactoryGet("BlimpSparseHistogram",
+                                            base::HistogramBase::kNoFlags)) {}
+
+BlimpConnectionStatistics::~BlimpConnectionStatistics() {}
+
+void BlimpConnectionStatistics::Add(EventType type, int data) {
+  histogram_->AddCount(type, data);
+}
+
+int BlimpConnectionStatistics::Get(EventType type) {
+  std::unique_ptr<base::HistogramSamples> snapshot =
+      histogram_->SnapshotSamples();
+  return snapshot->GetCount(type);

[Wez, 2016/06/07 00:30:12]

This doesn't look right; surely the whole point of snapshotting a histogram is
so you can grab the values from that snapshot to get a consistent view?

+}
+
+}  // namespace blimp