Add proper lifetime of encoder-specific settings.

webrtc/video/video_send_stream.cc

Index: webrtc/video/video_send_stream.cc
diff --git a/webrtc/video/video_send_stream.cc b/webrtc/video/video_send_stream.cc
index d1811d2ced341e471ec72a1c622caee1a4254a32..c6ba2325a64eda4e8b146fc37c888a497fb6973e 100644
--- a/webrtc/video/video_send_stream.cc
+++ b/webrtc/video/video_send_stream.cc
@@ -228,32 +228,27 @@ VideoCodec VideoEncoderConfigToVideoCodec(const VideoEncoderConfig& config,
       break;
   }
 
+  if (config.encoder_specific_settings)
+    config.encoder_specific_settings->FillEncoderSpecificSettings(&video_codec);
+
   switch (video_codec.codecType) {
     case kVideoCodecVP8: {
-      if (config.encoder_specific_settings) {
-        video_codec.codecSpecific.VP8 = *reinterpret_cast<const VideoCodecVP8*>(
-            config.encoder_specific_settings);
-      } else {
+      if (!config.encoder_specific_settings)
         video_codec.codecSpecific.VP8 = VideoEncoder::GetDefaultVp8Settings();
-      }
       video_codec.codecSpecific.VP8.numberOfTemporalLayers =
           static_cast<unsigned char>(
               streams.back().temporal_layer_thresholds_bps.size() + 1);
       break;
     }
     case kVideoCodecVP9: {
-      if (config.encoder_specific_settings) {
-        video_codec.codecSpecific.VP9 = *reinterpret_cast<const VideoCodecVP9*>(
-            config.encoder_specific_settings);
-        if (video_codec.mode == kScreensharing) {
-          video_codec.codecSpecific.VP9.flexibleMode = true;
-          // For now VP9 screensharing use 1 temporal and 2 spatial layers.
-          RTC_DCHECK_EQ(video_codec.codecSpecific.VP9.numberOfTemporalLayers,
-                        1);
-          RTC_DCHECK_EQ(video_codec.codecSpecific.VP9.numberOfSpatialLayers, 2);
-        }
-      } else {
+      if (!config.encoder_specific_settings)
         video_codec.codecSpecific.VP9 = VideoEncoder::GetDefaultVp9Settings();
+      if (video_codec.mode == kScreensharing &&
+          config.encoder_specific_settings) {
+        video_codec.codecSpecific.VP9.flexibleMode = true;
+        // For now VP9 screensharing use 1 temporal and 2 spatial layers.
+        RTC_DCHECK_EQ(1, video_codec.codecSpecific.VP9.numberOfTemporalLayers);
+        RTC_DCHECK_EQ(2, video_codec.codecSpecific.VP9.numberOfSpatialLayers);
       }
       video_codec.codecSpecific.VP9.numberOfTemporalLayers =
           static_cast<unsigned char>(
@@ -261,13 +256,8 @@ VideoCodec VideoEncoderConfigToVideoCodec(const VideoEncoderConfig& config,
       break;
     }
     case kVideoCodecH264: {
-      if (config.encoder_specific_settings) {
-        video_codec.codecSpecific.H264 =
-            *reinterpret_cast<const VideoCodecH264*>(
-                config.encoder_specific_settings);
-      } else {
+      if (!config.encoder_specific_settings)
         video_codec.codecSpecific.H264 = VideoEncoder::GetDefaultH264Settings();
-      }
       break;
     }
     default: