Delete DataLog abstraction, which was almost unused.

webrtc/system_wrappers/source/data_log_c_helpers_unittest.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 SRC_SYSTEM_WRAPPERS_SOURCE_DATA_LOG_C_HELPERS_UNITTEST_H_
-#define SRC_SYSTEM_WRAPPERS_SOURCE_DATA_LOG_C_HELPERS_UNITTEST_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int WebRtcDataLogCHelper_TestCreateLog();
-
-int WebRtcDataLogCHelper_TestReturnLog();
-
-int WebRtcDataLogCHelper_TestCombine();
-
-int WebRtcDataLogCHelper_TestAddTable();
-
-int WebRtcDataLogCHelper_TestAddColumn();
-
-int WebRtcDataLogCHelper_TestNextRow();
-
-int WebRtcDataLogCHelper_TestInsertCell_int();
-
-int WebRtcDataLogCHelper_TestInsertArray_int();
-
-int WebRtcDataLogCHelper_TestInsertCell_float();
-
-int WebRtcDataLogCHelper_TestInsertArray_float();
-
-int WebRtcDataLogCHelper_TestInsertCell_double();
-
-int WebRtcDataLogCHelper_TestInsertArray_double();
-
-int WebRtcDataLogCHelper_TestInsertCell_int32();
-
-int WebRtcDataLogCHelper_TestInsertArray_int32();
-
-int WebRtcDataLogCHelper_TestInsertCell_uint32();
-
-int WebRtcDataLogCHelper_TestInsertArray_uint32();
-
-int WebRtcDataLogCHelper_TestInsertCell_int64();
-
-int WebRtcDataLogCHelper_TestInsertArray_int64();
-
-#ifdef __cplusplus
-}  // end of extern "C"
-#endif
-
-#endif  // SRC_SYSTEM_WRAPPERS_SOURCE_DATA_LOG_C_HELPERS_UNITTEST_H_