Stop using LOG macros in favor of RTC_ prefixed macros.

This CL has been generated with the following script:

for m in PLOG \
  LOG_TAG \
  LOG_GLEM \
  LOG_GLE_EX \
  LOG_GLE \
  LAST_SYSTEM_ERROR \
  LOG_ERRNO_EX \
  LOG_ERRNO \
  LOG_ERR_EX \
  LOG_ERR \
  LOG_V \
  LOG_F \
  LOG_T_F \
  LOG_E \
  LOG_T \
  LOG_CHECK_LEVEL_V \
  LOG_CHECK_LEVEL \
  LOG
do
  git grep -l $m | xargs sed -i "s,\b$m\b,RTC_$m,g"
done
git checkout rtc_base/logging.h
git cl format

Bug: webrtc:8452
Change-Id: I1a53ef3e0a5ef6e244e62b2e012b864914784600
Reviewed-on: https://webrtc-review.googlesource.com/21325
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20617}
diff --git a/modules/audio_device/dummy/file_audio_device.cc b/modules/audio_device/dummy/file_audio_device.cc
index 6954762..af9b569 100644
--- a/modules/audio_device/dummy/file_audio_device.cc
+++ b/modules/audio_device/dummy/file_audio_device.cc
@@ -201,7 +201,7 @@
   // PLAYOUT
   if (!_outputFilename.empty() &&
       !_outputFile.OpenFile(_outputFilename.c_str(), false)) {
-    LOG(LS_ERROR) << "Failed to open playout file: " << _outputFilename;
+    RTC_LOG(LS_ERROR) << "Failed to open playout file: " << _outputFilename;
     _playing = false;
     delete[] _playoutBuffer;
     _playoutBuffer = NULL;
@@ -213,7 +213,8 @@
   _ptrThreadPlay->Start();
   _ptrThreadPlay->SetPriority(rtc::kRealtimePriority);
 
-  LOG(LS_INFO) << "Started playout capture to output file: " << _outputFilename;
+  RTC_LOG(LS_INFO) << "Started playout capture to output file: "
+                   << _outputFilename;
   return 0;
 }
 
@@ -236,7 +237,8 @@
   _playoutBuffer = NULL;
   _outputFile.CloseFile();
 
-  LOG(LS_INFO) << "Stopped playout capture to output file: " << _outputFilename;
+  RTC_LOG(LS_INFO) << "Stopped playout capture to output file: "
+                   << _outputFilename;
   return 0;
 }
 
@@ -256,7 +258,7 @@
 
   if (!_inputFilename.empty() &&
       !_inputFile.OpenFile(_inputFilename.c_str(), true)) {
-    LOG(LS_ERROR) << "Failed to open audio input file: " << _inputFilename;
+    RTC_LOG(LS_ERROR) << "Failed to open audio input file: " << _inputFilename;
     _recording = false;
     delete[] _recordingBuffer;
     _recordingBuffer = NULL;
@@ -269,7 +271,7 @@
   _ptrThreadRec->Start();
   _ptrThreadRec->SetPriority(rtc::kRealtimePriority);
 
-  LOG(LS_INFO) << "Started recording from input file: " << _inputFilename;
+  RTC_LOG(LS_INFO) << "Started recording from input file: " << _inputFilename;
 
   return 0;
 }
@@ -293,7 +295,7 @@
   }
   _inputFile.CloseFile();
 
-  LOG(LS_INFO) << "Stopped recording from input file: " << _inputFilename;
+  RTC_LOG(LS_INFO) << "Stopped recording from input file: " << _inputFilename;
   return 0;
 }
 
diff --git a/modules/audio_device/dummy/file_audio_device_factory.cc b/modules/audio_device/dummy/file_audio_device_factory.cc
index 1739953..6b38d8b 100644
--- a/modules/audio_device/dummy/file_audio_device_factory.cc
+++ b/modules/audio_device/dummy/file_audio_device_factory.cc
@@ -26,9 +26,10 @@
   // Bail out here if the files haven't been set explicitly.
   // audio_device_impl.cc should then fall back to dummy audio.
   if (!_isConfigured) {
-    LOG(LS_WARNING) << "WebRTC configured with WEBRTC_DUMMY_FILE_DEVICES but "
-                    << "no device files supplied. Will fall back to dummy "
-                    << "audio.";
+    RTC_LOG(LS_WARNING)
+        << "WebRTC configured with WEBRTC_DUMMY_FILE_DEVICES but "
+        << "no device files supplied. Will fall back to dummy "
+        << "audio.";
 
     return nullptr;
   }