UMA counters for SDES x media type

These counters will register whether the media sections
used with SDES are for audio, video or data.

Bug: chromium:804275
Change-Id: I1da3bb6625af755c0897bf4cd349655cb283fbb6
Reviewed-on: https://webrtc-review.googlesource.com/59400
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22287}
diff --git a/api/umametrics.h b/api/umametrics.h
index 71a3d5e..a2d055d 100644
--- a/api/umametrics.h
+++ b/api/umametrics.h
@@ -40,6 +40,7 @@
   kEnumCounterKeyProtocol,
   kEnumCounterSdpSemanticRequested,
   kEnumCounterSdpSemanticNegotiated,
+  kEnumCounterKeyProtocolMediaType,
   kPeerConnectionEnumCounterMax
 };
 
@@ -120,6 +121,16 @@
   kEnumCounterKeyProtocolMax
 };
 
+enum KeyExchangeProtocolMedia {
+  kEnumCounterKeyProtocolMediaTypeDtlsAudio,
+  kEnumCounterKeyProtocolMediaTypeDtlsVideo,
+  kEnumCounterKeyProtocolMediaTypeDtlsData,
+  kEnumCounterKeyProtocolMediaTypeSdesAudio,
+  kEnumCounterKeyProtocolMediaTypeSdesVideo,
+  kEnumCounterKeyProtocolMediaTypeSdesData,
+  kEnumCounterKeyProtocolMediaTypeMax
+};
+
 enum SdpSemanticRequested {
   kSdpSemanticRequestDefault,
   kSdpSemanticRequestPlanB,