Define cricket::MediaType in terms of webrtc::MediaType

This is one step in getting rid of cricket::MediaType.

Bug: webrtc:12754
Fixes: webrtc:12764
Change-Id: Idee832572bdc4c0e3bfdec6fb31ec0ba9db3e995
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/218346
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33994}
diff --git a/sdk/android/api/org/webrtc/MediaStreamTrack.java b/sdk/android/api/org/webrtc/MediaStreamTrack.java
index 0249ffb..fc93bd8 100644
--- a/sdk/android/api/org/webrtc/MediaStreamTrack.java
+++ b/sdk/android/api/org/webrtc/MediaStreamTrack.java
@@ -30,8 +30,8 @@
 
   // Must be kept in sync with cricket::MediaType.
   public enum MediaType {
-    MEDIA_TYPE_AUDIO(0),
-    MEDIA_TYPE_VIDEO(1);
+    MEDIA_TYPE_AUDIO(1),
+    MEDIA_TYPE_VIDEO(2);
 
     private final int nativeIndex;