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

remoting/host/current_process_stats_agent.h

Index: remoting/host/current_process_stats_agent.h
diff --git a/remoting/host/current_process_stats_agent.h b/remoting/host/current_process_stats_agent.h
deleted file mode 100644
index 82e1163ba089a45363e939f41852bf61f76a0908..0000000000000000000000000000000000000000
--- a/remoting/host/current_process_stats_agent.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// 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_CURRENT_PROCESS_STATS_AGENT_H_
-#define REMOTING_HOST_CURRENT_PROCESS_STATS_AGENT_H_
-
-#include <memory>
-#include <string>
-
-#include "remoting/host/process_stats_agent.h"
-#include "remoting/proto/process_stats.pb.h"
-
-namespace base {
-class ProcessMetrics;
-}  // namespace base
-
-namespace remoting {
-
-// A component to report statistic data of the current process.
-class CurrentProcessStatsAgent final : public ProcessStatsAgent {
- public:
-  explicit CurrentProcessStatsAgent(const std::string& process_name);
-  ~CurrentProcessStatsAgent() override;
-
-  // ProcessStatsAgent implementation.
-  protocol::ProcessResourceUsage GetResourceUsage() override;
-
- private:
-  const std::string process_name_;
-  const std::unique_ptr<base::ProcessMetrics> metrics_;
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_CURRENT_PROCESS_STATS_AGENT_H_