FileWrapper[Impl] modifications and actually remove the "Impl" class.

webrtc/system_wrappers/source/data_log.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.
  */
 
@@ skipping 187 matching lines @@
   CriticalSectionScoped synchronize(table_lock_);
   assert(columns_.count(column_name) > 0);
   if (columns_.count(column_name) == 0)
     return -1;
   return current_row_->InsertCell(column_name, value_container);
 }
 
 int LogTable::CreateLogFile(const std::string& file_name) {
   if (file_name.length() == 0)
     return -1;
-  if (file_->Open())
+  if (file_->is_open())
     return -1;
   file_->OpenFile(file_name.c_str(),
                   false,  // Open with read/write permissions
                   false,  // Don't wraparound and write at the beginning when
                           // the file is full
                   true);  // Open as a text file
   if (file_ == NULL)
     return -1;
   return 0;
 }
@@ skipping 206 matching lines @@
   flush_event_->Wait(WEBRTC_EVENT_INFINITE);
   Flush();
 }
 
 void DataLogImpl::StopThread() {
   flush_event_->Set();
   file_writer_thread_->Stop();
 }
 
 }  // namespace webrtc