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_coding/acm2/acm_resampler.cc b/modules/audio_coding/acm2/acm_resampler.cc
index 3cd7caa..b97ced2 100644
--- a/modules/audio_coding/acm2/acm_resampler.cc
+++ b/modules/audio_coding/acm2/acm_resampler.cc
@@ -43,16 +43,18 @@
 
   if (resampler_.InitializeIfNeeded(in_freq_hz, out_freq_hz,
                                     num_audio_channels) != 0) {
-    LOG(LS_ERROR) << "InitializeIfNeeded(" << in_freq_hz << ", " << out_freq_hz
-                  << ", " << num_audio_channels << ") failed.";
+    RTC_LOG(LS_ERROR) << "InitializeIfNeeded(" << in_freq_hz << ", "
+                      << out_freq_hz << ", " << num_audio_channels
+                      << ") failed.";
     return -1;
   }
 
   int out_length =
       resampler_.Resample(in_audio, in_length, out_audio, out_capacity_samples);
   if (out_length == -1) {
-    LOG(LS_ERROR) << "Resample(" << in_audio << ", " << in_length << ", "
-                  << out_audio << ", " << out_capacity_samples << ") failed.";
+    RTC_LOG(LS_ERROR) << "Resample(" << in_audio << ", " << in_length << ", "
+                      << out_audio << ", " << out_capacity_samples
+                      << ") failed.";
     return -1;
   }