Delete DataLog abstraction, which was almost unused.

webrtc/system_wrappers/source/data_log_helpers_unittest.cc

-/*
- *  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.
- */
-
-#include "webrtc/system_wrappers/include/data_log.h"
-
-#include <string>
-
-#include "webrtc/test/gtest.h"
-
-using ::webrtc::DataLog;
-
-TEST(TestDataLog, IntContainers) {
-  int c = 5;
-  webrtc::ValueContainer<int> v1(c);
-  c = 10;
-  webrtc::ValueContainer<int> v2(c);
-  std::string s1, s2;
-  v1.ToString(&s1);
-  v2.ToString(&s2);
-  ASSERT_EQ(s1, "5,");
-  ASSERT_EQ(s2, "10,");
-  v1 = v2;
-  v1.ToString(&s1);
-  ASSERT_EQ(s1, s2);
-}
-
-TEST(TestDataLog, DoubleContainers) {
-  double c = 3.5;
-  webrtc::ValueContainer<double> v1(c);
-  c = 10.3;
-  webrtc::ValueContainer<double> v2(c);
-  std::string s1, s2;
-  v1.ToString(&s1);
-  v2.ToString(&s2);
-  ASSERT_EQ(s1, "3.5,");
-  ASSERT_EQ(s2, "10.3,");
-  v1 = v2;
-  v1.ToString(&s1);
-  ASSERT_EQ(s1, s2);
-}
-
-TEST(TestDataLog, MultiValueContainers) {
-  int a[3] = {1, 2, 3};
-  int b[3] = {4, 5, 6};
-  webrtc::MultiValueContainer<int> m1(a, 3);
-  webrtc::MultiValueContainer<int> m2(b, 3);
-  webrtc::MultiValueContainer<int> m3(a, 3);
-  std::string s1, s2, s3;
-  m1.ToString(&s1);
-  m2.ToString(&s2);
-  ASSERT_EQ(s1, "1,2,3,");
-  ASSERT_EQ(s2, "4,5,6,");
-  m1 = m2;
-  m1.ToString(&s1);
-  ASSERT_EQ(s1, s2);
-  m3.ToString(&s3);
-  ASSERT_EQ(s3, "1,2,3,");
-}