Delete all log messages depending on system_wrappers.

webrtc/logging/rtc_event_log/rtc_event_log.cc

Index: webrtc/logging/rtc_event_log/rtc_event_log.cc
diff --git a/webrtc/logging/rtc_event_log/rtc_event_log.cc b/webrtc/logging/rtc_event_log/rtc_event_log.cc
index 902ce423436b15633b4146589360a489d2634a7e..800b39370dbd02e379b0b71f66e6ffa865c618ce 100644
--- a/webrtc/logging/rtc_event_log/rtc_event_log.cc
+++ b/webrtc/logging/rtc_event_log/rtc_event_log.cc
@@ -34,7 +34,6 @@
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/sdes.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/sender_report.h"
 #include "webrtc/system_wrappers/include/file_wrapper.h"
-#include "webrtc/system_wrappers/include/logging.h"
 
 #ifdef ENABLE_RTC_EVENT_LOG
 // Files generated at build-time by the protobuf compiler.
@@ -207,15 +206,12 @@ bool RtcEventLogImpl::StartLogging(const std::string& file_name,
   message.stop_time = std::numeric_limits<int64_t>::max();
   message.file.reset(FileWrapper::Create());
   if (!message.file->OpenFile(file_name.c_str(), false)) {
-    LOG(LS_ERROR) << "Can't open file. WebRTC event log not started.";
     return false;
   }
   if (!message_queue_.Insert(&message)) {
-    LOG(LS_ERROR) << "Message queue full. Can't start logging.";
     return false;
   }
   helper_thread_.SignalNewEvent();
-  LOG(LS_INFO) << "Starting WebRTC event log.";
   return true;
 }
 
@@ -232,24 +228,19 @@ bool RtcEventLogImpl::StartLogging(rtc::PlatformFile platform_file,
   message.file.reset(FileWrapper::Create());
   FILE* file_handle = rtc::FdopenPlatformFileForWriting(platform_file);
   if (!file_handle) {
-    LOG(LS_ERROR) << "Can't open file. WebRTC event log not started.";
     // Even though we failed to open a FILE*, the platform_file is still open
     // and needs to be closed.
     if (!rtc::ClosePlatformFile(platform_file)) {
-      LOG(LS_ERROR) << "Can't close file.";
     }
     return false;
   }
   if (!message.file->OpenFromFileHandle(file_handle)) {
-    LOG(LS_ERROR) << "Can't open file. WebRTC event log not started.";
     return false;
   }
   if (!message_queue_.Insert(&message)) {
-    LOG(LS_ERROR) << "Message queue full. Can't start logging.";
     return false;
   }
   helper_thread_.SignalNewEvent();
-  LOG(LS_INFO) << "Starting WebRTC event log.";
   return true;
 }
 
@@ -266,10 +257,8 @@ void RtcEventLogImpl::StopLogging() {
     // clear any STOP_FILE messages. To ensure that there is only one call at a
     // time, we require that all calls to StopLogging are made on the same
     // thread.
-    LOG(LS_ERROR) << "Message queue full. Clearing queue to stop logging.";
     message_queue_.Clear();
   }
-  LOG(LS_INFO) << "Stopping WebRTC event log.";
   helper_thread_.WaitForFileFinished();
 }
 
@@ -570,7 +559,6 @@ void RtcEventLogImpl::LogProbeResult(int id,
 
 void RtcEventLogImpl::StoreEvent(std::unique_ptr<rtclog::Event>* event) {
   if (!event_queue_.Insert(event)) {
-    LOG(LS_ERROR) << "WebRTC event log queue full. Dropping event.";
   }
   helper_thread_.SignalNewEvent();
 }
@@ -597,7 +585,6 @@ bool RtcEventLogNullImpl::StartLogging(rtc::PlatformFile platform_file,
                                        int64_t max_size_bytes) {
   // The platform_file is open and needs to be closed.
   if (!rtc::ClosePlatformFile(platform_file)) {
-    LOG(LS_ERROR) << "Can't close file.";
   }
   return false;
 }