media_recorder_handler: Changed deprecated ScopedVector to std::vector

content/renderer/media/media_recorder_handler.cc

Index: content/renderer/media/media_recorder_handler.cc
diff --git a/content/renderer/media/media_recorder_handler.cc b/content/renderer/media/media_recorder_handler.cc
index ce59ce42a4ecf1baf89f21bcf150aa896648dec3..061fbb98a45111c6dbbc7ea03edcfdc684ae1030 100644
--- a/content/renderer/media/media_recorder_handler.cc
+++ b/content/renderer/media/media_recorder_handler.cc
@@ -199,7 +199,7 @@ bool MediaRecorderHandler::start(int timeslice) {
         media::BindToCurrentLoop(base::Bind(
             &MediaRecorderHandler::OnEncodedVideo, weak_factory_.GetWeakPtr()));
 
-    video_recorders_.push_back(new VideoTrackRecorder(
+    video_recorders_.emplace_back(new VideoTrackRecorder(
         codec_id_, video_track, on_encoded_video_cb, video_bits_per_second_));
   }
 
@@ -217,7 +217,7 @@ bool MediaRecorderHandler::start(int timeslice) {
         media::BindToCurrentLoop(base::Bind(
             &MediaRecorderHandler::OnEncodedAudio, weak_factory_.GetWeakPtr()));
 
-    audio_recorders_.push_back(new AudioTrackRecorder(
+    audio_recorders_.emplace_back(new AudioTrackRecorder(
         audio_track, on_encoded_audio_cb, audio_bits_per_second_));
   }