Remove voe::Statistics.

voice_engine/statistics.h

-/*
- *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef VOICE_ENGINE_STATISTICS_H_
-#define VOICE_ENGINE_STATISTICS_H_
-
-#include "common_types.h"  // NOLINT(build/include)
-#include "rtc_base/criticalsection.h"
-#include "typedefs.h"  // NOLINT(build/include)
-#include "voice_engine/include/voe_errors.h"
-#include "voice_engine/voice_engine_defines.h"
-
-namespace webrtc {
-namespace voe {
-
-class Statistics
-{
- public:
-    enum {KTraceMaxMessageSize = 256};
- public:
-    Statistics(uint32_t instanceId);
-    ~Statistics();
-
-    int32_t SetInitialized();
-    int32_t SetUnInitialized();
-    bool Initialized() const;
-    int32_t SetLastError(int32_t error) const;
-    int32_t SetLastError(int32_t error, TraceLevel level) const;
-    int32_t SetLastError(int32_t error,
-                         TraceLevel level,
-                         const char* msg) const;
-
- private:
-    rtc::CriticalSection lock_;
-    const uint32_t _instanceId;
-    mutable int32_t _lastError;
-    bool _isInitialized;
-};
-
-}  // namespace voe
-
-}  // namespace webrtc
-
-#endif // VOICE_ENGINE_STATISTICS_H_