[Chromoting] Retrieve process resource usage (ProcessStats) and its tests

remoting/host/host_stats_stub.h

Index: remoting/host/host_stats_stub.h
diff --git a/remoting/host/host_stats_stub.h b/remoting/host/host_stats_stub.h
new file mode 100644
index 0000000000000000000000000000000000000000..ccb043dd4bea651a2eb33f1a441afb7a770e5b12
--- /dev/null
+++ b/remoting/host/host_stats_stub.h
@@ -0,0 +1,25 @@
+// 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 REMOTING_HOST_HOST_STATS_STUB_H_
+#define REMOTING_HOST_HOST_STATS_STUB_H_
+
+#include "remoting/base/process_resource_usage.h"
+
+namespace remoting {
+namespace host {
+
+// An interface to receive host process statistic data from HostStats.
+class HostStatsStub {
+ public:
+  HostStatsStub() = default;
+  ~HostStatsStub() = default;

[Sergey Ulanov, 2017/03/27 19:43:20]

destructor must be virtual in interfaces

[Hzj_jie, 2017/03/30 01:09:46]

Done.

+
+  virtual void OnHostStats(const ProcessResourceUsage& usage) = 0;
+};
+
+}  // namespace host
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_HOST_STATS_STUB_H_