Replace more instances of rtc::RefCountedObject with make_ref_counted.

This is essentially replacing `new rtc::RefCountedObject` with
`rtc::make_ref_counted` in many files. In a couple of places I
made minor tweaks to make things compile such as adding parenthesis
when they were missing.

Bug: webrtc:12701
Change-Id: I3828dbf3ee0eb0232f3a47067474484ac2f4aed2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215973
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33852}
diff --git a/modules/video_coding/codecs/multiplex/multiplex_decoder_adapter.cc b/modules/video_coding/codecs/multiplex/multiplex_decoder_adapter.cc
index 8d23c6d..2332fcd 100644
--- a/modules/video_coding/codecs/multiplex/multiplex_decoder_adapter.cc
+++ b/modules/video_coding/codecs/multiplex/multiplex_decoder_adapter.cc
@@ -248,9 +248,8 @@
         [yuv_buffer, alpha_buffer] {});
   }
   if (supports_augmenting_data_) {
-    merged_buffer = rtc::scoped_refptr<webrtc::AugmentedVideoFrameBuffer>(
-        new rtc::RefCountedObject<AugmentedVideoFrameBuffer>(
-            merged_buffer, std::move(augmenting_data), augmenting_data_length));
+    merged_buffer = rtc::make_ref_counted<AugmentedVideoFrameBuffer>(
+        merged_buffer, std::move(augmenting_data), augmenting_data_length);
   }
 
   VideoFrame merged_image = VideoFrame::Builder()
diff --git a/modules/video_coding/codecs/multiplex/test/multiplex_adapter_unittest.cc b/modules/video_coding/codecs/multiplex/test/multiplex_adapter_unittest.cc
index 2e7b0cb..7ecb24a 100644
--- a/modules/video_coding/codecs/multiplex/test/multiplex_adapter_unittest.cc
+++ b/modules/video_coding/codecs/multiplex/test/multiplex_adapter_unittest.cc
@@ -90,9 +90,9 @@
     for (int i = 0; i < 16; i++) {
       data[i] = i;
     }
-    rtc::scoped_refptr<AugmentedVideoFrameBuffer> augmented_video_frame_buffer =
-        new rtc::RefCountedObject<AugmentedVideoFrameBuffer>(
-            video_buffer, std::move(data), 16);
+    auto augmented_video_frame_buffer =
+        rtc::make_ref_counted<AugmentedVideoFrameBuffer>(video_buffer,
+                                                         std::move(data), 16);
     return std::make_unique<VideoFrame>(
         VideoFrame::Builder()
             .set_video_frame_buffer(augmented_video_frame_buffer)
diff --git a/modules/video_coding/video_codec_initializer_unittest.cc b/modules/video_coding/video_codec_initializer_unittest.cc
index 1ea145e..f7fde8d 100644
--- a/modules/video_coding/video_codec_initializer_unittest.cc
+++ b/modules/video_coding/video_codec_initializer_unittest.cc
@@ -74,13 +74,13 @@
       config_.number_of_streams = num_spatial_streams;
       VideoCodecVP8 vp8_settings = VideoEncoder::GetDefaultVp8Settings();
       vp8_settings.numberOfTemporalLayers = num_temporal_streams;
-      config_.encoder_specific_settings = new rtc::RefCountedObject<
+      config_.encoder_specific_settings = rtc::make_ref_counted<
           webrtc::VideoEncoderConfig::Vp8EncoderSpecificSettings>(vp8_settings);
     } else if (type == VideoCodecType::kVideoCodecVP9) {
       VideoCodecVP9 vp9_settings = VideoEncoder::GetDefaultVp9Settings();
       vp9_settings.numberOfSpatialLayers = num_spatial_streams;
       vp9_settings.numberOfTemporalLayers = num_temporal_streams;
-      config_.encoder_specific_settings = new rtc::RefCountedObject<
+      config_.encoder_specific_settings = rtc::make_ref_counted<
           webrtc::VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
     } else if (type != VideoCodecType::kVideoCodecMultiplex) {
       ADD_FAILURE() << "Unexpected codec type: " << type;