Move RTCVideoSource to webrtc/api/objc.

webrtc/api/objc/RTCMediaSource+Private.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.
  */
 
 #import "RTCMediaSource.h"
 
 #include "talk/app/webrtc/mediastreaminterface.h"
+#include "talk/app/webrtc/videosourceinterface.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
 @interface RTCMediaSource ()
 
 /**
  * The MediaSourceInterface object passed to this RTCMediaSource during
  * construction.
  */
 @property(nonatomic, readonly)
     rtc::scoped_refptr<webrtc::MediaSourceInterface> nativeMediaSource;
 
-/** Initialize an RTCMediaSource from a native MediaSourceInterface. */
-- (instancetype)initWithNativeMediaSource:
-    (rtc::scoped_refptr<webrtc::MediaSourceInterface>)nativeMediaSource
-    NS_DESIGNATED_INITIALIZER;
+/**
+ * If this is an RTCVideoSource instance, the VideoSourceInterface object passed
+ * in during construction.
+ */
+@property(nonatomic, readonly)
+    rtc::scoped_refptr<webrtc::VideoSourceInterface> nativeVideoSource;

[tkchin_webrtc, 2016/01/13 02:26:27]

this shouldn't be here - only in RTCVideoSource

[hjon, 2016/01/13 18:07:00]

Done.

 
 + (webrtc::MediaSourceInterface::SourceState)nativeSourceStateForState:
     (RTCSourceState)state;
 
 + (RTCSourceState)sourceStateForNativeState:
     (webrtc::MediaSourceInterface::SourceState)nativeState;
 
 + (NSString *)stringForState:(RTCSourceState)state;
 
 @end
 
 NS_ASSUME_NONNULL_END