Streamline error handling and logging in the audio processing module

Bug: webrtc:8529
Change-Id: I40817d578c2c4106892e564df1bc734efcef5503
Reviewed-on: https://webrtc-review.googlesource.com/52540
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22034}
diff --git a/modules/audio_processing/audio_processing_impl.cc b/modules/audio_processing/audio_processing_impl.cc
index 240d663..2c292f7 100644
--- a/modules/audio_processing/audio_processing_impl.cc
+++ b/modules/audio_processing/audio_processing_impl.cc
@@ -449,9 +449,8 @@
     private_submodules_->gain_controller2.reset(new GainController2());
 
     RTC_LOG(LS_INFO) << "Capture post processor activated: "
-                     << !!private_submodules_->capture_post_processor;
-
-    RTC_LOG(LS_INFO) << "Render pre processor activated: "
+                     << !!private_submodules_->capture_post_processor
+                     << "\nRender pre processor activated: "
                      << !!private_submodules_->render_pre_processor;
   }
 
@@ -709,11 +708,10 @@
 
   bool config_ok = LevelController::Validate(config_.level_controller);
   if (!config_ok) {
-    RTC_LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
-                      << "level_controller: "
+    RTC_LOG(LS_ERROR) << "AudioProcessing module config error\n"
+                         "level_controller: "
                       << LevelController::ToString(config_.level_controller)
-                      << std::endl
-                      << "Reverting to default parameter set";
+                      << "\nReverting to default parameter set";
     config_.level_controller = AudioProcessing::Config::LevelController();
   }
 
@@ -743,11 +741,10 @@
 
   config_ok = GainController2::Validate(config_.gain_controller2);
   if (!config_ok) {
-    RTC_LOG(LS_ERROR) << "AudioProcessing module config error" << std::endl
-                      << "Gain Controller 2: "
+    RTC_LOG(LS_ERROR) << "AudioProcessing module config error\n"
+                         "Gain Controller 2: "
                       << GainController2::ToString(config_.gain_controller2)
-                      << std::endl
-                      << "Reverting to default parameter set";
+                      << "\nReverting to default parameter set";
     config_.gain_controller2 = AudioProcessing::Config::GainController2();
   }
   InitializeGainController2();