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_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 5e53853..5e47f1a 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -403,8 +403,8 @@
     // implemented.
     private_submodules_->gain_controller2.reset(new GainController2());
 
-    LOG(LS_INFO) << "Capture post processor activated: "
-                 << !!private_submodules_->capture_post_processor;
+    RTC_LOG(LS_INFO) << "Capture post processor activated: "
+                     << !!private_submodules_->capture_post_processor;
   }
 
   SetExtraOptions(config);
@@ -660,11 +660,11 @@
 
   bool config_ok = LevelController::Validate(config_.level_controller);
   if (!config_ok) {
-    LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
-                  << "level_controller: "
-                  << LevelController::ToString(config_.level_controller)
-                  << std::endl
-                  << "Reverting to default parameter set";
+    RTC_LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
+                      << "level_controller: "
+                      << LevelController::ToString(config_.level_controller)
+                      << std::endl
+                      << "Reverting to default parameter set";
     config_.level_controller = AudioProcessing::Config::LevelController();
   }
 
@@ -682,15 +682,15 @@
     // the level controller regardless of whether it is enabled or not.
     InitializeLevelController();
   }
-  LOG(LS_INFO) << "Level controller activated: "
-               << capture_nonlocked_.level_controller_enabled;
+  RTC_LOG(LS_INFO) << "Level controller activated: "
+                   << capture_nonlocked_.level_controller_enabled;
 
   private_submodules_->level_controller->ApplyConfig(config_.level_controller);
 
   InitializeLowCutFilter();
 
-  LOG(LS_INFO) << "Highpass filter activated: "
-               << config_.high_pass_filter.enabled;
+  RTC_LOG(LS_INFO) << "Highpass filter activated: "
+                   << config_.high_pass_filter.enabled;
 
   // Deprecated way of activating AEC3.
   // TODO(gustaf): Remove when possible.
@@ -700,23 +700,23 @@
     echo_control_factory_ =
         std::unique_ptr<EchoControlFactory>(new EchoCanceller3Factory());
     InitializeEchoController();
-    LOG(LS_INFO) << "Echo canceller 3 activated: "
-                 << capture_nonlocked_.echo_controller_enabled;
+    RTC_LOG(LS_INFO) << "Echo canceller 3 activated: "
+                     << capture_nonlocked_.echo_controller_enabled;
   }
 
   config_ok = GainController2::Validate(config_.gain_controller2);
   if (!config_ok) {
-    LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
-                  << "Gain Controller 2: "
-                  << GainController2::ToString(config_.gain_controller2)
-                  << std::endl
-                  << "Reverting to default parameter set";
+    RTC_LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
+                      << "Gain Controller 2: "
+                      << GainController2::ToString(config_.gain_controller2)
+                      << std::endl
+                      << "Reverting to default parameter set";
     config_.gain_controller2 = AudioProcessing::Config::GainController2();
   }
   InitializeGainController2();
   private_submodules_->gain_controller2->ApplyConfig(config_.gain_controller2);
-  LOG(LS_INFO) << "Gain Controller 2 activated: "
-               << config_.gain_controller2.enabled;
+  RTC_LOG(LS_INFO) << "Gain Controller 2 activated: "
+                   << config_.gain_controller2.enabled;
 }
 
 void AudioProcessingImpl::SetExtraOptions(const webrtc::Config& config) {