Updated AudioDecoderFactory to list AudioCodecSpecs instead of SdpAudioFormats.

webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc

Index: webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc
diff --git a/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc b/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc
index 5f4cb157a88fe2abc237412d475b3df6239022ed..84e7b243f7a4fcf45b6a23d5fa61a8fd1edacdc2 100644
--- a/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc
+++ b/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.cc
@@ -129,22 +129,23 @@ NamedDecoderConstructor decoder_constructors[] = {
 
 class BuiltinAudioDecoderFactory : public AudioDecoderFactory {
  public:
-  std::vector<SdpAudioFormat> GetSupportedFormats() override {
-    static std::vector<SdpAudioFormat> formats = {
-      { "opus", 48000, 2, {
-          {"minptime", "10" },
-          {"useinbandfec", "1" }
-        }
+  std::vector<AudioCodecSpec> GetSupportedDecoders() override {
+    static std::vector<AudioCodecSpec> specs = {
+      { { "opus", 48000, 2, {
+            {"minptime", "10" },
+            {"useinbandfec", "1" }
+          }
+        }, false
       },
-      { "isac", 16000, 1 },
-      { "isac", 32000, 1 },
-      { "G722", 8000,  1 },
-      { "iLBC", 8000,  1 },
-      { "PCMU", 8000,  1 },
-      { "PCMA", 8000,  1 }
+      { { "isac", 16000, 1 }, true },
+      { { "isac", 32000, 1 }, true },
+      { { "G722", 8000,  1 }, true },
+      { { "iLBC", 8000,  1 }, true },
+      { { "PCMU", 8000,  1 }, true },
+      { { "PCMA", 8000,  1 }, true }
     };
 
-    return formats;
+    return specs;
   }
 
   std::unique_ptr<AudioDecoder> MakeAudioDecoder(