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}

modules/audio_coding/neteq/neteq_decoder_plc_unittest.cc

@@ -208,7 +208,7 @@ TestStatistics RunTest(int loss_cadence,
 
   NetEqTest neteq_test(
       config, /*decoder_factory=*/
-      new rtc::RefCountedObject<test::AudioDecoderProxyFactory>(&dec),
+      rtc::make_ref_counted<test::AudioDecoderProxyFactory>(&dec),
       /*codecs=*/decoders, /*text_log=*/nullptr, /*neteq_factory=*/nullptr,
       /*input=*/std::move(lossy_input), std::move(output), callbacks);
   EXPECT_LE(kRunTimeMs, neteq_test.Run());