Tweaks for new Objective-C API.

webrtc/api/objc/RTCDataChannel.h

 /*
  *  Copyright 2015 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 75 matching lines @@
  * this returns an empty string.
  */
 @property(nonatomic, readonly) NSString *protocol;
 
 /**
  * Returns whether this data channel was negotiated by the application or not.
  */
 @property(nonatomic, readonly) BOOL isNegotiated;
 
 /** The identifier for this data channel. */
-@property(nonatomic, readonly) int id;
+@property(nonatomic, readonly) int channelId;
 
 /** The state of the data channel. */
 @property(nonatomic, readonly) RTCDataChannelState readyState;
 
 /**
  * The number of bytes of application data that have been queued using
  * |sendData:| but that have not yet been transmitted to the network.
  */
 @property(nonatomic, readonly) uint64_t bufferedAmount;
 
 /** The delegate for this data channel. */
 @property(nonatomic, weak) id<RTCDataChannelDelegate> delegate;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 /** Closes the data channel. */
 - (void)close;
 
 /** Attempt to send |data| on this data channel's underlying data transport. */
 - (BOOL)sendData:(RTCDataBuffer *)data;
 
 @end
 
 NS_ASSUME_NONNULL_END