Delete DataLog abstraction, which was almost unused.

webrtc/system_wrappers/include/data_log_c.h

Index: webrtc/system_wrappers/include/data_log_c.h
diff --git a/webrtc/system_wrappers/include/data_log_c.h b/webrtc/system_wrappers/include/data_log_c.h
deleted file mode 100644
index d31e4d972ec3bb42c90943bc015d8f24fdaa1612..0000000000000000000000000000000000000000
--- a/webrtc/system_wrappers/include/data_log_c.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- *  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.
- */
-
-// This is a pure C wrapper of the DataLog class. The functions are directly
-// mapped here except for InsertCell as C does not support templates.
-// See data_log.h for a description of the functions.
-
-#ifndef SRC_SYSTEM_WRAPPERS_INCLUDE_DATA_LOG_C_H_
-#define SRC_SYSTEM_WRAPPERS_INCLUDE_DATA_LOG_C_H_
-
-#include <stddef.h>  // size_t
-
-#include "webrtc/typedefs.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// All char* parameters in this file are expected to be null-terminated
-// character sequences.
-int WebRtcDataLog_CreateLog();
-void WebRtcDataLog_ReturnLog();
-char* WebRtcDataLog_Combine(char* combined_name, size_t combined_len,
-                            const char* table_name, int table_id);
-int WebRtcDataLog_AddTable(const char* table_name);
-int WebRtcDataLog_AddColumn(const char* table_name, const char* column_name,
-                            int multi_value_length);
-
-int WebRtcDataLog_InsertCell_int(const char* table_name,
-                                 const char* column_name,
-                                 int value);
-int WebRtcDataLog_InsertArray_int(const char* table_name,
-                                  const char* column_name,
-                                  const int* values,
-                                  int length);
-int WebRtcDataLog_InsertCell_float(const char* table_name,
-                                   const char* column_name,
-                                   float value);
-int WebRtcDataLog_InsertArray_float(const char* table_name,
-                                    const char* column_name,
-                                    const float* values,
-                                    int length);
-int WebRtcDataLog_InsertCell_double(const char* table_name,
-                                    const char* column_name,
-                                    double value);
-int WebRtcDataLog_InsertArray_double(const char* table_name,
-                                     const char* column_name,
-                                     const double* values,
-                                     int length);
-int WebRtcDataLog_InsertCell_int32(const char* table_name,
-                                   const char* column_name,
-                                   int32_t value);
-int WebRtcDataLog_InsertArray_int32(const char* table_name,
-                                    const char* column_name,
-                                    const int32_t* values,
-                                    int length);
-int WebRtcDataLog_InsertCell_uint32(const char* table_name,
-                                    const char* column_name,
-                                    uint32_t value);
-int WebRtcDataLog_InsertArray_uint32(const char* table_name,
-                                     const char* column_name,
-                                     const uint32_t* values,
-                                     int length);
-int WebRtcDataLog_InsertCell_int64(const char* table_name,
-                                   const char* column_name,
-                                   int64_t value);
-int WebRtcDataLog_InsertArray_int64(const char* table_name,
-                                    const char* column_name,
-                                    const int64_t* values,
-                                    int length);
-
-int WebRtcDataLog_NextRow(const char* table_name);
-
-#ifdef __cplusplus
-}  // end of extern "C"
-#endif
-
-#endif  // SRC_SYSTEM_WRAPPERS_INCLUDE_DATA_LOG_C_H_  // NOLINT