Change rtp_event_log2text to ignore webrtc::MediaType from proto.

BUG=webrtc:7538

Review-Url: https://codereview.webrtc.org/2894833003
Cr-Original-Commit-Position: refs/heads/master@{#18210}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: c52bd61f65d04b364e90a672691963d089ca5141
1 file changed