Delete RawVideoType enum, use the VideoType enum instead.

webrtc/modules/video_capture/objc/video_capture.mm

 /*
  *  Copyright (c) 2013 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 82 matching lines @@
   is_capturing_ = false;
   return 0;
 }
 
 bool VideoCaptureIos::CaptureStarted() {
   return is_capturing_;
 }
 
 int32_t VideoCaptureIos::CaptureSettings(VideoCaptureCapability& settings) {
   settings = capability_;
-  settings.rawType = kVideoNV12;
+  settings.videoType = VideoType::kNV12;
   return 0;
 }