Make a friendlier RTCVideoCodecInfo initializer.

webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCVideoCodecH264.mm

 /*
  *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 40 matching lines @@
   NSMutableArray<RTCVideoCodecInfo *> *codecs = [NSMutableArray array];
   NSString *codecName = [NSString stringWithUTF8String:cricket::kH264CodecName];
 
   if (IsHighProfileEnabled()) {
     NSDictionary<NSString *, NSString *> *constrainedHighParams = @{
       @"profile-level-id" : kLevel31ConstrainedHigh,
       @"level-asymmetry-allowed" : @"1",
       @"packetization-mode" : @"1",
     };
     RTCVideoCodecInfo *constrainedHighInfo =
-        [[RTCVideoCodecInfo alloc] initWithPayload:0
-                                              name:codecName
-                                        parameters:constrainedHighParams];
+        [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:constrainedHighParams];
     [codecs addObject:constrainedHighInfo];
   }
 
   NSDictionary<NSString *, NSString *> *constrainedBaselineParams = @{
     @"profile-level-id" : kLevel31ConstrainedBaseline,
     @"level-asymmetry-allowed" : @"1",
     @"packetization-mode" : @"1",
   };
   RTCVideoCodecInfo *constrainedBaselineInfo =
-      [[RTCVideoCodecInfo alloc] initWithPayload:0
-                                            name:codecName
-                                      parameters:constrainedBaselineParams];
+      [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:constrainedBaselineParams];
   [codecs addObject:constrainedBaselineInfo];
 
   return [codecs copy];
 }
 
 - (id<RTCVideoEncoder>)createEncoder:(RTCVideoCodecInfo *)info {
   return [[RTCVideoEncoderH264 alloc] initWithCodecInfo:info];
 }
 
 @end
 
 // Decoder factory.
 @implementation RTCVideoDecoderFactoryH264
 
 - (id<RTCVideoDecoder>)createDecoder:(RTCVideoCodecInfo *)info {
   return [[RTCVideoDecoderH264 alloc] init];
 }
 
 - (NSArray<RTCVideoCodecInfo *> *)supportedCodecs {
   NSString *codecName = [NSString stringWithUTF8String:cricket::kH264CodecName];
-  return @[ [[RTCVideoCodecInfo alloc] initWithPayload:0 name:codecName parameters:@{}] ];
+  return @[ [[RTCVideoCodecInfo alloc] initWithName:codecName parameters:nil] ];
 }
 
 @end